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BEGIN:VEVENT
SUMMARY:Alain Goriely (Oxford University)
DTSTART:20200602T160000Z
DTEND:20200602T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/1
DESCRIPTION:Title: The surprising shape of planets\nby Alain Goriely (Oxford Uni
versity) as part of Maths seminars at the University of Galway\n\n\nAbstr
act\nWe usually picture planets as spheres. Yet\, the first problem of gra
vitational physics was to determine the shape of an object due to its own
mass. In the case of a fluid planet\, this problem was considered so impo
rtant that most of the great physicists and mathematicians worked on it fo
r the last 350 years before a satisfactory theory was established. In the
case of a solid planet\, the problem is quite different and much more comp
licated. The problem is to determine the possible equilibria of a planet
modelled as a homogeneous compressible spherical elastic body subject to i
ts own gravitational field. In the absence of gravity the initial radius i
s given and the density is constant. With gravity and for small planets\,
the elastic deformations are small enough so that the spherical equilibri
a can be readily obtained by using the theory of linear elasticity. For l
arger or denser planets\, large deformations are possible and surprising b
ehaviours emerge as will be revealed during this talk.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sarah Muldoon (University at Buffalo)
DTSTART:20200604T130000Z
DTEND:20200604T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/2
DESCRIPTION:Title: Personalized brain network models\nby Sarah Muldoon (Universi
ty at Buffalo) as part of Maths seminars at the University of Galway\n\n\
nAbstract\nPersonalized Brain Network Models (BNMs) are a new type of comp
utational tool that simulate a specific individual’s brain activity base
d on measured structural brain connections. These models have been shown t
o be sensitive to individual differences in brain network structure and al
low one to perform in silico experiments in order to make predictions abou
t the effects of stimulation\, disease progression\, or drug treatment at
the level of a specific individual. I will describe how one build such com
putational models from neuroimaging data and describe work using personali
zed BNMs to explore individual differences in brain structure and function
.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Krishnan Shankar (The University of Oklahoma)
DTSTART:20200611T150000Z
DTEND:20200611T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/3
DESCRIPTION:Title: A mathematical exploration\nby Krishnan Shankar (The Universi
ty of Oklahoma) as part of Maths seminars at the University of Galway\n\n
\nAbstract\nIn this talk we will explore a variety of mathematical ideas i
n dynamical systems\, arithmetic and geometry. I will present three beaut
iful yet elementary constructions which point to a deeper hidden structure
in each case. We will explore\, for instance\, how billiard balls natura
lly spell out the digits of pi or how the arithmetic mean\, geometric mean
inequality of numbers leads to a deep\, unsolved problem in geometry. Wh
ile the full explanation of the "why" of these phenomena require graduate
level or advanced mathematics\, most of the talk is meant to be accessible
to anyone with a college level background in mathematics.\n\nZOOM: https:
//zoom.us/j/98366657903?pwd=Y2FuMkZWbmJQd1NCeHAyQkRNak01Zz09\n\nMEETING ID
: 983 6665 7903 Password: 830340\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrew Lobb (Durham University)
DTSTART:20200618T100000Z
DTEND:20200618T110000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/4
DESCRIPTION:Title: The smooth rectangular peg problem\nby Andrew Lobb (Durham Un
iversity) as part of Maths seminars at the University of Galway\n\n\nAbst
ract\nFor any smooth Jordan curve and rectangle in the plane\, we show tha
t there exist four points on the Jordan curve forming the vertices of a re
ctangle similar to the given one. No expertize assumed. Joint work with
Josh Greene.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hannah Conroy Broderick (NUI Galway)
DTSTART:20200901T130000Z
DTEND:20200901T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/5
DESCRIPTION:Title: Wrinkles and waves in soft dielectric plates\nby Hannah Conro
y Broderick (NUI Galway) as part of Maths seminars at the University of G
alway\n\n\nAbstract\nSoft dielectric materials are smart materials that de
form in the presence of an electric field. They have potential promising a
pplications in devices such as artificial muscles and soft robotics\, wher
e there is great demand for materials that can undergo repeated large defo
rmations. \n\nIn principle\, large deformations can be obtained by exploit
ing the so-called snap-through instability. However\, this phenomenon is d
ifficult to achieve and control in practice\, as the material often fails
due to electric breakdown\, or due to wrinkles appearing on the surface of
the material. Here we study in turn the stability of voltage and charge-c
ontrolled soft dielectric plates. We investigate Hessian and geometric ins
tability modes. We find that voltage-controlled dielectrics can wrinkle in
compression and extension\, whereas charge-controlled dielectrics can onl
y wrinkle in compression. We find that charge-controlled actuation is more
stable than voltage-controlled actuation.\n\nStudies on waves in dielectr
ic materials suggest the possibility of controlling the wave velocity by a
pplying an appropriate electric field. This paves the way for applying aco
ustic non-destructive evaluation techniques to dielectric plates\, a techn
ique already used in purely elastic materials. Here we study Lamb wave pro
pagation in dielectric plates subject to electrical and mechanical loading
s. We look at the effects of the pre-stress\, the electric field and the s
train-stiffening on the wave characteristics.\n\nThis work relies on theor
etical and numerical treatments\, using the multiphysics theory of nonline
ar electro-elasticity\, the incremental theory of small deformations and m
otions superposed on a large actuation\, the Stroh formalism\, the numeric
al resolution of boundary-value problems\, and Finite Element simulations.
\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Haixuan Yang (National University of Ireland Galway)
DTSTART:20201008T150000Z
DTEND:20201008T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/6
DESCRIPTION:Title: A Heat Diffusion Model on a graph with boundary conditions and it
s Applications\nby Haixuan Yang (National University of Ireland Galway
) as part of Maths seminars at the University of Galway\n\n\nAbstract\n15
years ago\, we developed a heat diffusion model on a graph\, and applied
it to classification problems and ranking problems. This model only has in
itial conditions\, but no boundary conditions. 17 years ago\, there was a
famous method (Harmonic Method) using harmonic functions on a graph\, whic
h has no initial conditions\, but has boundary conditions\, and the soluti
on is an equilibrium of heat diffusion models\, i.e.\, the time goes infin
ity. Recently we considered a heat diffusion with both initial conditions
and boundary conditions. The labelled nodes in a graph are set as boundary
conditions that will exert their influence on other unlabelled nodes whil
e the initial guess on the unlabelled nodes are set as initial conditions.
The diffusion process thus balances these two sets of conditions: When ti
mes go to infinity\, it becomes equilibrium\, and thus the method becomes
the Harmonic Method\; When time is zero\, there is only initial guess. We
believe that there are some cases\, for which the status before the equili
brium is achieved is better. This is a joint work with Mohan Timilsina\,
Vit Novacek\, Mathieu d'Aquin at INSIGHT.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Peter Clarkson (University of Kent)
DTSTART:20201112T160000Z
DTEND:20201112T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/7
DESCRIPTION:Title: Some reflections on Athena SWAN\nby Peter Clarkson (Universit
y of Kent) as part of Maths seminars at the University of Galway\n\n\nAbs
tract\nIn this talk I shall give some personal reflections of Athena SWAN
applications based on my experience as the chair of my School's Athena SWA
N Self Assessment Team as an Athena SWAN panelist and as chair of the Lond
on Mathematical Society Good Practice Scheme steering committee. In partic
ular I'll describe some aspects of good practice as well some which in my
opinion should be avoided.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bharat Tripathi (National University of Ireland Galway)
DTSTART:20201126T160000Z
DTEND:20201126T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/8
DESCRIPTION:Title: On Modelling and Simulation of Nonlinear Waves for Biomedical Pro
blems\nby Bharat Tripathi (National University of Ireland Galway) as p
art of Maths seminars at the University of Galway\n\n\nAbstract\nBeing a
new faculty at the School\, I would like to talk about my doctoral and pos
t-doctoral research work. It is on the development of mathematical models
and numerical methods describing the propagation of nonlinear-acoustic and
nonlinear-shear waves in fluids and solids\, respectively.\n\nMy doctoral
work (at Sorbonne Université\, Paris\, France) was about the development
of a discontinuous Galerkin method for simulating acoustic shock waves in
air/water in 2D. This method was used to study the nonlinear reflection o
f acoustic shock waves on rigid surfaces\, ranging from the linear Snell-D
escartes reflection to the weak von Neumann case. A convex-concave surface
was designed to show the formation of secondary smooth Mach stem using th
e primary smooth Mach stem\, which to our knowledge was never observed bef
ore in acoustics. \n\nDuring my postdoctoral years (at University of North
Carolina at Chapel Hill\, USA)\, I was working on modelling and simulatio
n of shear shock waves in the brain in context of traumatic brain injury.
This led to the development of a system of nine equations describing the n
onlinear propagation of linearly-polarized shear waves in relaxing soft s
olids with ability to incorporate an arbitrary frequency dependent attenua
tion/dispersion power-law. The model was then numerically simulated using
the piecewise parabolic finite volume method. This model/method was valida
ted with experimental data and was used to show the formation of shear sho
ck waves\, for the first time\, in a human head phantom.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Tuite (National University of Ireland Galway)
DTSTART:20201203T160000Z
DTEND:20201203T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/9
DESCRIPTION:Title: Vertex operator algebras and a generalized MacMahon master theore
m\nby Michael Tuite (National University of Ireland Galway) as part of
Maths seminars at the University of Galway\n\n\nAbstract\nVertex operato
r algebras have remarkable links with number theory\, combinatorics\, geom
etry\, group theory and theoretical physics. In this talk I discuss the ap
plication of a generalized MacMahon master theorem from enumerative combin
atorics to the description of the Heisenberg vertex operator algebra (the
bosonic string in theoretical physics) on a Riemann surface.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Richard Burke (National University of Ireland Galway)
DTSTART:20201127T120000Z
DTEND:20201127T130000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/10
DESCRIPTION:Title: Emergence in hybrid adaptive multi-agent systems\nby Richard
Burke (National University of Ireland Galway) as part of Maths seminars a
t the University of Galway\n\n\nAbstract\nThis thesis investigates a numb
er of hybrid adaptive strategies\, to drive multi-agent systems from initi
al states of disorder towards consensus or favourable configurations. The
dynamics of the agents and their communicative links\, represented by nonl
inear ODEs\, may be visualised as evolving networks. Numerical experiments
supplement the mathematical models presented.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dúalta Ó Fionnagáin (National University of Ireland Galway)
DTSTART:20201119T160000Z
DTEND:20201119T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/11
DESCRIPTION:Title: Modelling the winds of low-mass stars like our Sun\nby Dúal
ta Ó Fionnagáin (National University of Ireland Galway) as part of Maths
seminars at the University of Galway\n\n\nAbstract\nStars similar to the
Sun evolve through their lifetime through two main mechanisms\; the loss
of mass and angular momentum. This occurs through the interaction of the s
tellar wind and the stellar magnetic field. For low-mass stars like our Su
n\, detection of these winds is very difficult with current telescopes. Us
ing 3D magnetohydrodynamic modelling tools (BATS-R-US)\, we can quantify t
he winds from these stars\, constraining their possible evolutionary paths
. Since stellar winds directly impact orbiting exoplanets\, it also impact
s their evolution and their potential habitability.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Viola Siconolfi (Bielefeld University)
DTSTART:20201210T160000Z
DTEND:20201210T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/12
DESCRIPTION:Title: Ricci curvature\, graphs and Coxeter groups\nby Viola Sicono
lfi (Bielefeld University) as part of Maths seminars at the University of
Galway\n\n\nAbstract\nI will talk about a notion of curvature for graphs
introduced by Schmuckenschläger which is defined as an analogue of Ricci
curvature. This quantity can be computed explicitly for various graphs an
d\nallows to find bounds on the spectral gap of the graph and isoperimetri
c-type inequalities.\nI will present some general results on the computati
on of the discrete Ricci curvature of any locally finite graph. I will the
n focus on graphs associated with Coxeter groups: Bruhat graphs\, weak ord
er graphs and Hasse diagrams of the Bruhat order.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Martin Winter (TU Chemnitz)
DTSTART:20210304T160000Z
DTEND:20210304T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/13
DESCRIPTION:Title: On Symmetry\, Rigidity and Spectrum of Graph Realizations and Po
lytopes\nby Martin Winter (TU Chemnitz) as part of Maths seminars at t
he University of Galway\n\n\nAbstract\nA graph realization is an embeddin
g of a graph into Euclidean space\, such as the skeleton of a polytope. We
consider graph realizations and polytopes with prescribed symmetries\, an
d we aske whether they can be continuously deformed without losing these s
ymmetries\, that is\, whether they are rigid or \nflexible under the given
symmetry constraints. We identify classes of symmetries for graphs and po
lytopes\, so that any realization of this symmetry is necessarily rigid. W
e thereby demonstrate that spectral graph theory is a useful tool in study
ing the interplay between symmetry and rigidity.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Thái Anh Nhan (Holy Names University\, CA)
DTSTART:20210318T160000Z
DTEND:20210318T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/14
DESCRIPTION:Title: Five years after my PhD: life\, work\, and research\nby Thá
i Anh Nhan (Holy Names University\, CA) as part of Maths seminars at the
University of Galway\n\n\nAbstract\nI graduated with my Ph.D. in 2015 unde
r the supervision of Dr. Niall Madden. In this talk\, I will report a five
-year pleasant adventure of my life including the changes in life\, work\,
and research. In particular\, for the research\, I will discuss our recen
t result that answered a decades-old question in the field of singularly p
erturbed differential equations regarding the finite-difference analysis o
n the Bakhvalov mesh for two-dimensional convection-diffusion problems.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:James Cruickshank (NUI Galway)
DTSTART:20210218T160000Z
DTEND:20210218T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/15
DESCRIPTION:Title: Rigidity and combinatorial topology\nby James Cruickshank (N
UI Galway) as part of Maths seminars at the University of Galway\n\n\nAbs
tract\nI will present an introduction of some of the connections between t
he rigidity theory of bar joint frameworks and combinatorial topology. The
foundational result in this respect is Cauchy's Rigidity Theorem from 183
2\, but there have been many interesting developments in more recent times
. No specialist knowledge of rigidity theory or of combinatorial topology
will be assumed. I will finish by discussing some recent joint work with B
ill Jackson (Queen Mary) and Shin-Ichi Tanigawa (University of Tokyo) on t
he global rigidity of triangulated surfaces.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Roberto Galizia (NUIG)
DTSTART:20210415T080000Z
DTEND:20210415T090000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/16
DESCRIPTION:Title: PhD viva -- Exploiting individual agent properties for analysis
and control of collective network evolution\nby Roberto Galizia (NUIG)
as part of Maths seminars at the University of Galway\n\n\nAbstract\nWe
investigate linearly coupled dynamic networks made up of identical agents.
We study the principles in which the dynamical features of the underlying
constituent agents transfer to the collective dynamics of the entire netw
ork. This is carried out from two points of view: analysis and control. In
the former case\, we defined and discussed the Regions of Reduced Dynamic
s\, a particular subset of the network parameter space in which the behavi
our of the entire network can be fully determined from the dynamics of the
underlying constituent agents. In the latter case\, we designed a decentr
alized control algorithm that drives networks towards a desired state whil
e only acting on a subset of network nodes without using any global inform
ation about the network.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Pawel Dlotko (Polish Academy of Sciences)
DTSTART:20211104T160000Z
DTEND:20211104T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/17
DESCRIPTION:Title: Mild introduction to Topological Data Analysis (ONLINE)\nby
Pawel Dlotko (Polish Academy of Sciences) as part of Maths seminars at the
University of Galway\n\n\nAbstract\nOften applied mathematics is conside
red to be restricted to differential equations and dynamical systems theor
y. Recently\, however\, we see a growth of combinatorial\, geometrical and
topological techniques used in applied sciences. In this talk I will intr
oduce two main techniques of applied topology: persistent homology and map
per algorithm. Starting from discrete collections of points P we will use
them to build descriptors summarizing the shape of P. The talk will be ill
ustrated with examples of applications of presented tools in very differen
t branches of physical\, medical and social sciences. We will also discuss
the interface of the presented methods with statistics/ machine learning.
\n\nContact: Graham Ellis\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Romina Gaburro (University of Limerick)
DTSTART:20210623T130000Z
DTEND:20210623T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/18
DESCRIPTION:Title: Inverse problems and imaging\nby Romina Gaburro (University
of Limerick) as part of Maths seminars at the University of Galway\n\n\nA
bstract\nIn this talk we introduce the concept of inverse problem\, the ma
thematical technique behind imaging and material characterisation. We expl
ain its intrinsic ill-posed nature\, the idea of inversion from data/measu
rements to parameter (describing a physical property of a medium) and the
mathematical challenges behind imaging.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Noemi Picco (Swansea University)
DTSTART:20210624T103000Z
DTEND:20210624T113000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/19
DESCRIPTION:Title: Modelling Drug Resistance in Cancer Across Scales\nby Noemi
Picco (Swansea University) as part of Maths seminars at the University of
Galway\n\n\nAbstract\nResistance to drug treatment for many types of canc
er is poorly understood. In many cancer patients it appears in the form of
a temporary response to the drug (with the tumour shrinking)\, followed b
y relapse (regrowth). For a specific class of cancers (e.g. melanoma and n
on small cell lung cancer) treated with so-called targeted therapies\, res
istance seems to be the result of complex interactions between the cancer
cells\, the host tissue\, and the drug\, operating across different spatia
l and temporal scales.\n\nTo fully understand cancer and its response to t
reatment\, we are faced with the challenge of understanding how cells beha
ve in the absence of a drug\, and how the dynamics shift when treatment is
applied.\n\nI will present two mathematical models that approach this cha
llenge at different levels (scales)\, to show how data-driven modelling ca
n describe the processes of interest and make testable predictions. For bo
th models I will present some preliminary findings and highlight the curre
nt limitations in the interpretation of model predictions\, and the import
ance of modelling in the design of treatment protocols able to successfull
y control the emergence of resistance.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giuseppe Zurlo (National University of Ireland Galway)
DTSTART:20210916T150000Z
DTEND:20210916T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/21
DESCRIPTION:Title: Growing\, melting\, twisting: three stories from mechanics (ONLI
NE)\nby Giuseppe Zurlo (National University of Ireland Galway) as part
of Maths seminars at the University of Galway\n\n\nAbstract\nIn this tal
k I will give an informal account on three problems that I have studied du
ring my recent sabbatical leave. I will first talk of memory in growing bo
dies\, like sandpiles or biological tissues\, shedding emphasis on the dif
ferential geometric nature of "memory". I will then talk of what happens w
hen you use a 3D printer\, why often cracks form and how dangerous neglect
ing this effect can be. I will finally talk of what happens when you twist
a thin cord\, like the ones you may find in key holders: after you twist
them enough\, a kink is formed\, and here I provide a simple energetic exp
lanation of this effect.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Harold Berjamin (NUI Galway)
DTSTART:20211021T150000Z
DTEND:20211021T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/22
DESCRIPTION:Title: Recent developments on the propagation of mechanical waves in so
ft solids\nby Harold Berjamin (NUI Galway) as part of Maths seminars a
t the University of Galway\n\n\nAbstract\nIn this talk\, I will give an o
verview of recent results obtained during my IRC postdoctoral fellowship a
t NUI Galway\, covering several topics related to wave propagation in soft
solids. First\, the propagation of directional sound beams in elastic sol
ids will be discussed. Second\, the propagation of nonlinear plane waves i
n fluid-saturated porous media will be addressed. Then\, the modelling of
viscoelastic dissipation will be considered\, including thermodynamic aspe
cts\, acoustoelasticity theory\, and its application to the study of phono
nic crystals. Ongoing and future developments will also be presented.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Quan Zhang (NUI Galway)
DTSTART:20211028T150000Z
DTEND:20211028T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/23
DESCRIPTION:Title: Low-Frequency Elastic Wave Manipulation and Vibration Isolation
with Metamaterials\nby Quan Zhang (NUI Galway) as part of Maths semina
rs at the University of Galway\n\n\nAbstract\nControlling wave propagatio
n through materials is of great importance to both engineering and fundame
ntal research. Metamaterials have significantly expanded the available mat
erial parameter spaces and brought advances to our control capability for
wave propagation and vibration isolation. This talk focuses on low-frequen
cy elastic wave control and vibration isolation with metamaterials. The co
ntent includes the following parts\, topological metamaterials with local
resonance and the corresponding interface propagating states\, tailored me
chanical metamaterials with programmable quasi-zero-stiffness (QZS) featur
es for ultra-low frequency vibration isolation.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Faiza Alssaedi (NUI Galway)
DTSTART:20211015T083000Z
DTEND:20211015T093000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/24
DESCRIPTION:Title: Algorithms for the accurate and efficient solution of fourth ord
er boundary-layer problems\nby Faiza Alssaedi (NUI Galway) as part of
Maths seminars at the University of Galway\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Máire Ní Leathlobhair (Trinity College Dublin)
DTSTART:20220421T150000Z
DTEND:20220421T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/25
DESCRIPTION:Title: Timing landmark events in pre-cancerous evolution\nby Máire
Ní Leathlobhair (Trinity College Dublin) as part of Maths seminars at th
e University of Galway\n\nLecture held in ADBG021.\n\nAbstract\nThe inter
play of mutation\, copy number change\, structural rearrangement and clona
l expansion\, leaves a record of the life history of a cancer inscribed in
its genome. By applying recently developed bioinformatic and statistical
methods to sequencing data\, we can reconstruct this life history\, and in
fer the timing of specific events and mutational processes early in tumour
development. In this seminar we’ll look at some examples of this in lon
g-latency diseases such as myeloproliferative neoplasms and testicular can
cer.\n\nContact: Cathal Seoighe\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:confirmed
DTSTART:20220203T160000Z
DTEND:20220203T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/27
DESCRIPTION:Title: Presentation on two Master programmes\nby confirmed as part
of Maths seminars at the University of Galway\n\n\nAbstract\nContact: Ais
ling McCluskey\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dessislava Kochloukova (University of Campinas\, Brazil)
DTSTART:20220210T160000Z
DTEND:20220210T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/28
DESCRIPTION:Title: On the weak commutative construction in group theory\nby Des
sislava Kochloukova (University of Campinas\, Brazil) as part of Maths sem
inars at the University of Galway\n\n\nAbstract\nWe will discuss some old
and some recent results on the weak commutativity construction X(G) that
associates to any group G a new group X(G). The definition goes back to a
paper of Said Sidki (1980) and later it was discovered that this construc
tion has strong links with the non-abelian tensor square of G. We will giv
e a survey on the properties of the construction X(G). One of the new resu
lts that will be presented is a joint work with Martin Bridson that whenev
er G is finitely presented the group X(G) is finitely presented too.\nCont
act: Graham Ellis\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:FYP
DTSTART:20220217T160000Z
DTEND:20220217T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/29
DESCRIPTION:Title: FYP presentations\nby FYP as part of Maths seminars at the
University of Galway\n\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Workshop
DTSTART:20220407T150000Z
DTEND:20220407T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/30
DESCRIPTION:Title: workshop on enumerative combinatorics\nby Workshop as part o
f Maths seminars at the University of Galway\n\n\nAbstract\nNote: the wor
kshop is into the usual seminar time slot. \nContact: Angela\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jason DeVito (University of Tennessee)
DTSTART:20220602T150000Z
DTEND:20220602T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/32
DESCRIPTION:Title: The soul theorem and its converse\nby Jason DeVito (Universi
ty of Tennessee) as part of Maths seminars at the University of Galway\n\
nLecture held in ADB1020.\n\nAbstract\nCheeger and Gromoll's Soul theorem
gives a fundamental structure result for any complete non-compact Riemanni
an manifold with non-negative sectional curvature: any such example must h
ave the structure of a vector bundle over a closed non-negatively curved R
iemannian manifold. But\, given a closed non-negatively curved Riemannian
manifold of non-negative sectional curvature\, which vector bundles over
it admit non-negatively curved metrics? After surveying previous results
and constructions for homogeneous spaces and cohomogeneity one manifolds\,
we will discuss their applicability to Riemannian quotients of these spac
es. We will then present a new construction which enlarges the class of k
nown examples. This is joint work with David González-Álvaro.\nContact:
Martin Kerin\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/32/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Róisín Hill (NUIG)
DTSTART:20220516T083000Z
DTEND:20220516T093000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/33
DESCRIPTION:Title: PhD viva talk: Moving mesh methods for layer phenomena problems<
/a>\nby Róisín Hill (NUIG) as part of Maths seminars at the University
of Galway\n\nLecture held in AC201.\n\nAbstract\nLocation: AC201 and onlin
e\nContact: Niall Madden\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/33/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Maeve McCarthy
DTSTART:20220512T160000Z
DTEND:20220512T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/34
DESCRIPTION:Title: Control of Mosquito Populations Through the Introduction of Ster
ile Mosquitoes\nby Maeve McCarthy as part of Maths seminars at the Un
iversity of Galway\n\n\nAbstract\nAs part of "Celebrating Women in Mathema
tics in 2022" on May 12\, the NUI Galway SIAM Chapter will host a talk on
Zoom by\nProf Maeve McCarthy\, Murray State University\, on "Control of Mo
squito Populations Through the Introduction of Sterile Mosquitoes". The ta
lk describes how differential equations can be used to model of mosquito c
ontrol\, and introduces some optimal control theory. It is aimed at a gene
ral undergraduate audience.\n\nMaeve McCarthy is a graduate of NUI Galway.
She earned her PhD from Rice University\, and is now the Jesse D. Jones E
ndowed Professor of Mathematics at Murray State\, Kentucky. She's has serv
ed as executive director of the Association for Women in Mathematics. For
more about Maeve\, see https://en.wikipedia.org/wiki/Maeve_McCarthy\n\nTo
learn more about the significance of 12 May\, see https://may12.womeninmat
hs.org/why\n\nContact: NUI Galway SIAM Student Chapter\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/34/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stephen Russel (Valeo)
DTSTART:20220523T150000Z
DTEND:20220523T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/35
DESCRIPTION:Title: A vision based approach to driver assistance systems\nby Ste
phen Russel (Valeo) as part of Maths seminars at the University of Galway
\n\nLecture held in ADB1020.\n\nAbstract\nIn most modern vehicles today\,
advanced driver assistance systems are implemented in order to improve roa
d safety and driver comfort. As this technology becomes more sophisticated
\, increased levels of vehicle autonomy are becoming a reality. This is ac
hieved by processing and manipulating data that is collected from sensors
placed around the vehicle. Vision-based systems use cameras as their prima
ry source of data. In this talk\, we will look at the role that computer v
ision plays in the development of driver assistance systems\, together wit
h some of the mathematics involved that make it all possible.\n\nContact:
Valentina Balbi\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/35/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Antonia Trotta (Medtronic)
DTSTART:20220525T150000Z
DTEND:20220525T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/36
DESCRIPTION:Title: Finite Element Analysis - Application to Medical Device Design\nby Antonia Trotta (Medtronic) as part of Maths seminars at the Univer
sity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nTranscatheter Aort
ic Valve Replacement (TAVR) is a minimally invasive procedure for the repl
acement of a diseased aortic valve. During the procedure\, a delivery cath
eter system (DCS) is used to guide the TAV to the heart. The TAV is then d
eployed over the native valve. Finite Element (FE) modelling is extensivel
y used during the development phase of the DCS to improve device design an
d performance. The aim of this talk is to provide examples of applications
of finite element modelling to DCS design. In particular\, the talk will
focus on a FE model developed to predict the performance of the DCS during
tracking\, where a number of parameters affecting the performance of the
DCS were investigated.\n\nContact: Valentina Balbi\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/36/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Beatrice Charamba (NUIG)
DTSTART:20220614T083000Z
DTEND:20220614T093000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/37
DESCRIPTION:Title: PhD viva talk: A Bayesian functional concurrent model for missin
g irregular functional data\nby Beatrice Charamba (NUIG) as part of Ma
ths seminars at the University of Galway\n\nLecture held in ADB1020.\nAbs
tract: TBA\n\nContact: Andrew Simpkin\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/37/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sean McGinty
DTSTART:20221013T140000Z
DTEND:20221013T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/38
DESCRIPTION:Title: Understanding how anti-proliferative drug modulates arterial hea
ling following endovascular device deployment: a mathematical and computat
ional approach\nby Sean McGinty as part of Maths seminars at the Univ
ersity of Galway\n\nLecture held in Alice Perry Engineering Building Rm 30
52.\n\nAbstract\nNowadays\, it is taken for granted that stents are a safe
and effective treatment for obstructive coronary artery disease. Clinica
l outcomes are good\, but even with contemporary devices\, repeat revascul
arisation rates at 1 year are still at least 3-5%\, increasing annually at
a similar rate\, with even higher rates in complex lesions such as bifurc
ations. Through the years there have been a number of innovations includin
g thinner struts\, more biocompatible alloys\, biodegradable coating and m
ost recently bioresorbable scaffolds. Despite the astronomical investmen
t\, these have yielded only incremental improvements in patient outcome.
The most disruptive technology in the field remains\, without doubt\, the
incorporation of anti-proliferative drug to create drug-eluting stents (DE
S)\, with rates of restenosis (renarrowing) slashed from around 30% to 5%\
, compared with drug-free counterparts. In this talk\, we reconsider the
‘drug’ aspect of DES and explore the potential of driving down stubbor
n repeat revascularisation rates further through optimisation of the drug
delivery protocol.\n\n \n\nFirstly\, we present a series of mathematical m
odels of varying complexity to model the effect of drugs on smooth muscle
cell proliferation in an in-vitro environment\, and make comparisons with
experimental data. Our results highlight that\, at least for Sodium Salicy
late and Paclitaxel\, the current state-of-the-art nonlinear saturable bin
ding model is incapable of capturing the proliferative response of SMCs ac
ross a range of drug doses and exposure times [1].\n\n \n\nNext\, moving t
owards the in vivo situation\, a novel continuum model of tissue growth co
upled with spatiotemporal delivery of drug is presented in order to simula
te the response of the artery to stenting. Our results indicate that the s
everity and time-course of restenosis is critically dependent on the drug
delivery strategy. Specifically\, we uncover an intricate interplay betwe
en initial drug loading\, drug release rate and restenosis\, indicating th
at it is not sufficient to simply ramp-up the drug dose or prolong the tim
e course of drug release to improve stent efficacy [2].\n\n \n\nFinally\,
some preliminary work is presented that considers the incorporation of dis
ease (from intravascular imaging) within our models of stent drug release
and tissue transport\, motivating the need for a more tailored drug-delive
ry strategy.\n\n \n\n[1] McQueen\, A.\, Escuer\, J.\, Aggarwal\, A. \, Ken
nedy\, S. \, McCormick\, C.\, Oldroyd\, K. and Mcginty\, S. (2021) Do we r
eally understand how drug eluted from stents modulates arterial healing? I
nternational Journal of Pharmaceutics\, 601\, 120575. (doi: 10.1016/j.ijph
arm.2021.120575)\n\n \n\n[2] McQueen\, A.\, Escuer\, J.\, Schmidt\, A. F.\
, Aggarwal\, A. \, Kennedy\, S. \, McCormick\, C.\, Oldroyd\, K. and Mcgin
ty\, S. (2022) An intricate interplay between stent drug dose and release
rate dictates arterial restenosis. Journal of Controlled Release\, 349\, p
p. 992-1008. (doi: 10.1016/j.jconrel.2022.07.037)\n\nThis seminar is joint
ly hosted by the School of Engineering and the School of Mathematical and
Statistical Sciences.\nContact: Martin Meere & William Ronan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/38/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kelvin Killeen
DTSTART:20220913T110000Z
DTEND:20220913T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/39
DESCRIPTION:Title: PhD viva talk: Computing invariants of knotted manifolds\nby
Kelvin Killeen as part of Maths seminars at the University of Galway\n\n
Lecture held in SC200B.\nAbstract: TBA\n\n"Sandwiches will be served in th
e School common room to all who are hungry at 12.45pm on Tuesday 13 Septem
ber. This is prior to Kelvin Killeen's PhD viva which takes place at 2pm t
hat day.\n\nAt 12pm in the video conference room - SC200B on the Concourse
- Kelvin will give a 30-minute presentation on his thesis work:\n\nComput
ing invariants of knotted manifolds\nKelvin Killeen\n12pm 13 Sept 2022\, S
C200B"\n\nContact: Graham Ellis\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/39/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gotz Pfeiffer (University of Galway)
DTSTART:20220929T150000Z
DTEND:20220929T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/40
DESCRIPTION:Title: Falling Powers and the Algebra of Descents\nby Gotz Pfeiffer
(University of Galway) as part of Maths seminars at the University of Ga
lway\n\nLecture held in ADB1020.\n\nAbstract\nA finite Coxeter group of cl
assical type A\, B or D contains a chain of\nsubgroups of the same type.
We show that intersections of conjugates\nof these subgroups are again of
the same type\, and make precise in\nwhich sense and to what extent this p
roperty is exclusive to the\nclassical types of Coxeter groups. As the ma
in tool for the proof we\nuse Solomon’s descent algebra. Using Stirling
numbers\, we express\ncertain basis elements of the descent algebra as po
lynomials and\nderive explicit multiplication formulas for a commutative s
ubalgebra\nof the descent algebra. This is joint work with Linus Hellebra
ndt.\n\nCoffee/tea/cakes/biscuits will be served in ADBG022 from 3:30.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/40/
END:VEVENT
BEGIN:VEVENT
SUMMARY:John Grant McLoughlin (University of New Brunswick)
DTSTART:20221103T160000Z
DTEND:20221103T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/41
DESCRIPTION:Title: Mathematical Logic Puzzles on a Grid\nby John Grant McLoughl
in (University of New Brunswick) as part of Maths seminars at the Univers
ity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThe starting point
is a recently published collection authored by Susan Milner. The resource
is freely available through the Canadian Mathematical Society as part of t
he ATOM (A Taste of Mathematics) Series.\n\nhttps://cms.math.ca/wp-content
/uploads/2022/10/ATOM-XVII-Mathematical-Logic-Puzzles-on-a-Grid-1.pdf\n\nT
he grid theme will carry forward with a subsequent blend of recreational m
athematical ideas and problems offered in a playful spirit. Adaptability i
s a thread woven through the selection as variations or shifts in the prob
lems posed may lend themselves to engaging people across the spectra of ag
e and mathematical backgrounds. Simply bring along some curiosity.\n\nCont
act: Aisling McCluskey\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/41/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michel Destrade (University of Galway)
DTSTART:20221110T160000Z
DTEND:20221110T170000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/42
DESCRIPTION:Title: Acoustic evaluation of material parameters\, stresses\, and stra
ins in soft solids\nby Michel Destrade (University of Galway) as part
of Maths seminars at the University of Galway\n\nLecture held in ADB1020.
\n\nAbstract\nThis talk discusses two non-destructive evaluation aims that
can be achieved with elastic waves travelling in soft materials. \nFirst\
, we see how tracking the changes in wave speed with stress or strain give
s access to linear and nonlinear material parameters. These can then be us
ed to design biomaterials or to create meaningful Finite Element simulatio
ns. Examples include brain matter\, muscles\, and stretched soft plates.\n
Then\, we find that the state of stress and strain existing in a loaded ma
terial can be accessed directly from wave speed measurements\, without hav
ing to determine\, or even know\, its material properties. These technique
s are expected to have important applications in health monitoring of load
ed structures. Examples include stressed rail steel\, muscle\, and thin me
mbranes such as a stretched rubber sheet\, a piece of cling film (~10 μm
thick) and the animal skin of a bodhrán\, a traditional Irish drum.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/42/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Zdenka Guadarrama (Rockhurst University\, Missouri)
DTSTART:20221110T120000Z
DTEND:20221110T130000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/43
DESCRIPTION:Title: The E-Guadarrama Museum of ART in Math Teaching\nby Zdenka G
uadarrama (Rockhurst University\, Missouri) as part of Maths seminars at t
he University of Galway\n\nLecture held in CELT seminar room AMB1006.\n\n
Abstract\nThroughout my teaching career\, I have taken an opportunity to u
se art as the medium to engage students in doing mathematics. Students’
active engagement in the “doing of mathematics” in the classroom is a
chieved through carefully crafted inquiry activities\, class projects\, an
d meaningful assessments. Undergraduate research and community engagement
provide opportunities for students to showcase their math-art work outside
of the classroom. Through a guided tour of the galleries in the E-Guadarr
ama Museum of ART in Math Teaching\, I will share examples of art as a med
ium for mathematics in a variety of classes in the undergraduate curriculu
m\, in different parts of the learning cycle\, and as motivation for commu
nity projects. I hope this museum visit will inspire you to bring art into
your math teaching.\n\nHost: CELT\nOrganized by Dr. Mairead Greene in CE
LT\nContact: Aisling McCluskey\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/43/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sultan Alzahrani (University of Galway)
DTSTART:20221109T120000Z
DTEND:20221109T130000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/46
DESCRIPTION:Title: Explicit Computations of Ask Zeta Functions\nby Sultan Alzah
rani (University of Galway) as part of Maths seminars at the University o
f Galway\n\nLecture held in ADB1020.\nAbstract: TBA\n\nTea/coffee and sand
wiches will be available from 12.45 in ADB-G022 (tea room).\nPhD viva talk
.\nContact: Tobias Rossmann\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/46/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dana Saleh (University of Galway)
DTSTART:20221219T100000Z
DTEND:20221219T110000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/47
DESCRIPTION:Title: PhD viva talk: 2-uniform covering groups of elementary abelian 2
-groups\nby Dana Saleh (University of Galway) as part of Maths seminar
s at the University of Galway\n\nLecture held in ADB1020.\nAbstract: TBA\
n\nLocation: AdB-1020 and online at https://nuigalway-ie.zoom.us/j/958170
18456?pwd=allZRXgrUG9sMUJ3YlhOYVBtTlUzdz09 Passcode: 238665\n\nThe talk wi
ll be followed by coffee in the research room (AdB-G022) at 10.30 approx.\
n\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/47/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stephan Rudykh (University of Galway)
DTSTART:20230202T150000Z
DTEND:20230202T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/48
DESCRIPTION:Title: Magnetoactive elastomers: Micromechanics\, instabilities\, and p
attern formations\nby Stephan Rudykh (University of Galway) as part of
Maths seminars at the University of Galway\n\nLecture held in ADB1020.\n
\nAbstract\nMagnetoactive elastomers (MAE) can change their shape and prop
erties when excited by an external magnetic field. In this work\, we study
the nonlinear behavior of magnetoactive elastomers in the framework of la
rge deformations coupled with magnetic fields. We analyze the role of the
microstructures in the overall performance and stability of the soft activ
e composites. We examine the coupled behavior of the active composites wit
h (i) periodically and (ii) randomly distributed active particles embedded
in a soft matrix [1]\, and (iii) periodic laminate composites and anisotr
opically structured composites with chain-like structures [2-4]. We identi
fy the key parameters governing the magneto-mechanical couplings. Moreover
\, we find advantageous microstructures that significantly enhance the cou
pling and actuation of the active materials [1]. Furthermore\, we show tha
t even very similar microstructures\, such as periodic composites with hex
agonal and rectangular representative volume elements\, exhibit very diffe
rent behavior in terms of their actuation and effective properties [1]. Ne
xt\, we investigate the coupled magneto-elastic instabilities in MAE. Thes
e instabilities may occur at different length scales [3\, 5]\, and\, poten
tially\, they may be exploited to achieve new functionalities such as tuna
ble elastic wave band-gaps [6\, 7\, 8].\n\nWe explore the role of external
magnetic fields\, microstructure parameters\, and consentient properties
on the multiscale instabilities. Finally\, the ideas will be illustrated b
y our recent experimental results on instabilities in magnetoactive lamina
te [9] and particulate composites [5].\n\n\n\nREFERENCES\n\n[1] E. Galipae
u et al.\, Magnetoactive elastomers with periodic and random microstructur
es. Int. J. Solids. Struct.\, 51\, 3012-3024\, 2014.\n\n[2] S. Rudykh and
K. Bertoldi\, Stability of anisotropic magnetorheological elastomers in fi
nite deformations: A micromechanical approach. J. Mech. Phys. Solids\, 61\
, 949-967\, 2013.\n\n[3] P. Pathak et al.\, Magnetoelastic instabilities i
n soft laminates with ferromagnetic hyperelastic phases. Int. J. Mech. Sci
ences\, 213\, 106862\, 2022.\n\n[4] A. Goshkoderia and S. Rudykh\, Stabili
ty of magnetoactive composites with periodic microstructures undergoing fi
nite strains in the presence of a magnetic field. Composites Part B\, 128\
, 19-29\, 2017.\n\n[5] A. Goshkoderia et al.\, Instability-induced pattern
formations in soft magnetoactive composites. Phys. Rev. Lett.\, 124\, 158
002\, 2020.\n\n[6] N. Karami-Mohammadi et al.\, Soft magnetoactive laminat
es: large deformations\, transverse elastic waves and band gaps tunability
by a magnetic field J. Appl. Mech.\, 86\, 111001\, 2019.\n\n[7] Q. Zhang
and S. Rudykh\, Magneto-deformation and transverse elastic waves in hard-m
agnetic soft laminates. Mech. Materials 169\, 104325\, 2022.\n\n[8] Q. Zha
ng et al.\, Magnetic field-induced asymmetric mechanical metamaterials. Ex
treme Mechanics Letters 59\, 101957\, 2023.\n\n[9] V. Chen et al. Mechanic
al instability tuning of a magnetorheological elastomer composite laminate
. Composites Part B 251\, 110472\, 2023.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/48/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shane Whelan (UCD School of Mathematics & Statistics)
DTSTART:20230302T150000Z
DTEND:20230302T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/50
DESCRIPTION:Title: Mortality and Longevity in Ireland\nby Shane Whelan (UCD Sch
ool of Mathematics & Statistics) as part of Maths seminars at the Univers
ity of Galway\n\nLecture held in AC202.\n\nAbstract\n(Note the non-standar
d location. This talk will take place in the Arts and Science Concourse.)\
n\nShane will take us through some of the highlights of the research in hi
s recent book\, Mortality and Longevity in Ireland\, recently published by
Dublin University Press with the support of the Society of Actuaries in I
reland. The talk will be an informal overview\, focussing on some importan
t issues with those interested in the detail directed to the different cha
pters.\n \nShane will attempt to answer two questions:\n\n* How long can t
hose now alive in Ireland expect to live?\n\n* How long can their children
expect to live?\n\nHe will overview official mortality forecasts (on whic
h he advises the CS0). A simple two-parameter model that well described la
te-life mortality will be outlined. He will mention stochastic approaches
and show how to build scenarios under a deterministic model\, with associa
ted probability levels. He will discuss the wisdom\, or not\, of relying o
n longevity forecasts to change the State retirement age. Putting a value
on human life\, he will review how actuaries estimate lump sum compensatio
n for future loss. Finishing on a much-needed action\, he highlights that
compensation for negligence in the delivery of maternity services in Irel
and is now higher than its day-to-day running costs and persistent recomme
ndations for reform of the services remain unimplemented. \n\n\nDr Shane W
helan is an actuary and Associate Professor in UCD School of Mathematics &
Statistics\, and former Head of the Department of Statistics & Actuarial
Science. He was the managing editor of the British Actuarial Journal for s
everal years and served on councils of the actuarial profession both in Ir
eland and the UK. He has been a member of the Central Statistics Office (C
SO) Expert Group on Population Projections since 2007\, was a member of th
e Pension Council of Ireland\, and has assisted the High Court in determin
ing damages in precedent-setting catastrophic personal injury cases. Much
of his research is available at www.shanewhelan.org.\n\nNote the non-stand
ard location. This talk will take place in the Arts and Science Concourse.
\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/50/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr Gibran Hemani (Bristol Medical School)
DTSTART:20230511T140000Z
DTEND:20230511T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/53
DESCRIPTION:Title: The future of genetic biobanks\nby Dr Gibran Hemani (Bristol
Medical School) as part of Maths seminars at the University of Galway\n\
nLecture held in ADB1020.\n\nAbstract\nGenetic epidemiology aims to unrave
l the genetic factors influencing disease\, with broad real world goals of
a) predicting disease risk among individuals in the population\, and b) b
etter identifying modifiable molecular and behavioural interventions to pr
event and treat disease. Over the past decade we have witnessed an extraor
dinary leap in sample sizes of epidemiological cohorts with genotype or DN
A sequence data driving this endeavour. Our current phase of biobanks in t
he UK is now in the process of recruiting 5 million participants\, linking
their genetic information to rich medical health records. In this talk I
will describe what necessitates this scale of genetic data\, and then disc
uss some statistical challenges - in particular several population phenome
na that bias genetic associations are exacerbated as population-based samp
le sizes grow. An interesting remedy lies in over-sampling complete famili
es to harness the natural randomisation process in genetic inheritance to
improve statistical inference.\n\nContact: John Ferguson\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/53/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Raimondo Penta (University of Glasgow)
DTSTART:20230323T150000Z
DTEND:20230323T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/54
DESCRIPTION:Title: Poroelasticity derived via asymptotic homogenization - Mathemati
cal modelling and numerical simulations.\nby Raimondo Penta (Universit
y of Glasgow) as part of Maths seminars at the University of Galway\n\nLe
cture held in ADB1020.\n\nAbstract\nPoroelasticity derived via asymptotic
homogenization - Mathematical modelling and numerical simulations. State o
f the art\, further perspectives\, and extension to poroelastic composites
\n\nThe mechanical behavior of a solid elastic structure interplaying wit
h fluid percolating its pores can be studied via the Theory of Poroelastic
ity. There exists a large variety of scenarios of interest that can be tre
ated by means of a poroelastic modeling approach\, including soil mechanic
s\, (bio) artificial constructs and biological tissues\, such as bone\, or
gans\, healthy and malignant (tumorous) cell aggregates. Here\, we (a) rev
isit the equations of poroelasticity derived via asymptotic homogenization
[I]\, (b) focus on recent applications of the theory [II\, V]\, and (c) w
e discuss recent advances on the subject which are relevant for linear and
nonlinear poroelastic composites [III\, IV]. These latter are materials w
here the average distance between the various matrix constituents is compa
rable with the porescale. \n\nReferences: \n\n[I] Burridge\, Robert\, and
Joseph B. Keller. Poroelasticity equations derived from microstructure\; T
he Journal of the Acoustical Society of America 70.4 (1981): 1140-1146. \n
\n[II] Dehghani\, H.\, R. Penta\, and J. Merodio. The role of porosity and
solid matrix compressibility on the mechanical behavior of poroelastic ti
ssues\; Materials Research Express 6.3 (2018): 035404. \n\n[III] Miller\,
Laura\, and Raimondo Penta. "Effective balance equations for poroelastic c
omposites." Continuum Mechanics and Thermodynamics (2020): 1-25. \n\n[IV]
Miller\, Laura\, and Raimondo Penta. "Homogenized Balance Equations for No
nlinear Poroelastic Composites." Applied Sciences 11.14 (2021): 6611. \n\n
[V] Dehghani\, H.\, Noll\, I.\, Penta\, R.\, Menzel\, A.\, & Merodio\, J.
(2020). The role of microscale solid matrix compressibility on the mechani
cal behaviour of poroelastic materials. European Journal of Mechanics-A/So
lids\, 83\, 103996.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/54/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael McGettrick (University of Galway)
DTSTART:20230330T140000Z
DTEND:20230330T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/55
DESCRIPTION:Title: An overview of Quantum Game Theory\nby Michael McGettrick (U
niversity of Galway) as part of Maths seminars at the University of Galwa
y\n\nLecture held in ADB1020.\n\nAbstract\nI will present an overview of q
uantum games from its initial formulation (David Meyer\, 1999\, arXiv:quan
t-ph/9804010) to current developments. In much the same way that quantum c
omputing has revolutionized (parts of) classical computing\, quantum game
theory is rapidly revolutionizing (classical) game theory. In this (non-ex
haustive) presentation\, I will describe in some detail some specific exam
ples\, so that it is hoped the audience will get an appreciation of what i
s fundamentally different about the quantum approach. Specifically\, I wil
l describe the PQ Penny Flip game\, the quantum Prisoners Dilemma\, and th
e celebrated CHSH game. I identify in each case the quantum nature of the
game\, the role of quantum operations (Unitary matrices)\, and the use of
entangled quantum states as a resource. We see in some cases the quantum v
ersion of the classical game has different (Nash) equilibria\, while in ot
her cases the use of shared entanglement can increase the winning probabil
ity (in cooperative games). In the talk\, no assumption is made of familia
rity with quantum mechanics / physics\, the theory is presented mathematic
ally. (In any case - essentially quantum mechanics is (arguably) probabili
ty theory using the L2 norm….)\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/55/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Peter Smith (Victoria University of Wellington\, New Zealand)
DTSTART:20230413T140000Z
DTEND:20230413T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/56
DESCRIPTION:Title: Mobility Models for Unmanned Aerial Vehicles (UAVs or drones)\nby Peter Smith (Victoria University of Wellington\, New Zealand) as par
t of Maths seminars at the University of Galway\n\nLecture held in ADB102
0.\n\nAbstract\nWe develop a family of tractable models for UAV mobility.
Based on a system of coupled stochastic differential equations\, the resul
ting models exhibit realistic trajectories and flexible covariance structu
res\, making them suitable for both small scale and large scale applicatio
ns. Closed form solutions for steady state and transient position distribu
tions\, as well as position covariance\, are derived.\nThese results are s
ubsequently used to obtain distance outage probabilities and pathloss. The
analytical results allow us to assess the impact of a variety of system p
arameters related to device control\, navigation and position measurement
errors. Finally\, using measured UAV flight data\, we show an excellent go
odness of fit between the proposed model and the data.\nI will also give a
brief overview of current work at VUW on reconfigurable intelligent surfa
ces and the fusion of radar sensing and communications.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/56/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Abolfazl Mohajer (University of Galway)
DTSTART:20230406T140000Z
DTEND:20230406T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/57
DESCRIPTION:Title: Smoothness of Hodge Loci and Applications\nby Dr. Abolfazl M
ohajer (University of Galway) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this talk I will di
scuss a recent conjecture (by Movasati) we are working on about the Hodge
loci in the moduli of smooth complex hypersurfaces. Consider the moduli of
such hypersurfaces in $\\P^n$ which can be seen as the space of homogeneo
us polynomials of degree $d$ and coefficients in $\\C$ of variables $(x_0\
,...\,x_{n+1})$. We consider a subvariety of this moduli space parametrizi
ng hypersurfaces containing two projective spaces as cycles both of dimens
ions $n/2$. We consider the algebraic Hodge cycle resulting from this cycl
e and consider its deformation in the moduli space. In this way we define
a Hodge locus and one conjectures that this Hodge locus is smooth and also
that it is of codimension 1 in the intersection of the Hodge loci of the
original cycles. I discuss how this may contribute to Hodge conjecture and
also why it in its own right is an interesting problem. I will also discu
ss the progress that is being made in the problem.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/57/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Groups in Galway
DTSTART:20230518T140000Z
DTEND:20230518T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/58
DESCRIPTION:Title: Groups in Galway\nby Groups in Galway as part of Maths semin
ars at the University of Galway\n\nLecture held in ADB1020.\nAbstract: TB
A\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/58/
END:VEVENT
BEGIN:VEVENT
SUMMARY:School Research Day
DTSTART:20230420T090000Z
DTEND:20230420T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/59
DESCRIPTION:Title: School Research Day\nby School Research Day as part of Maths
seminars at the University of Galway\n\nLecture held in Orbsen Building.
\n\nAbstract\nOur annual School Research Day takes place today\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/59/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Patrick Heslin (Maynooth University)
DTSTART:20230511T130000Z
DTEND:20230511T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/60
DESCRIPTION:Title: Hydrodynamics and Infinite-Dimensional Geometry\nby Patrick
Heslin (Maynooth University) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nSince the work of Kolmo
gorov\, Arnold\, Ebin and Marsden\, infinte-dimensional Riemannian geometr
y has been a fruitful viewpoint from which to investigate hydrodynamics. I
will begin with the development of these ideas in the '60s and '70s\, bef
ore moving on to current work. In particular I will discuss geodesic equat
ions framed as two-point boundary value problems and describe how this rel
ates to the behaviour of Lagrangian solutions of the Euler equations of id
eal hydrodynamics.\n\nContact: James Cruickshank\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/60/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alessandro Musesti (Università Cattolica del Sacro Cuore)
DTSTART:20230523T110000Z
DTEND:20230523T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/61
DESCRIPTION:Title: On the mathematical modeling of skeletal muscle tissue\nby A
lessandro Musesti (Università Cattolica del Sacro Cuore) as part of Maths
seminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbst
ract\n[Part of the Stokes Modelling Workshop]\n\nSkeletal muscle tissue is
the prevalent tissue constituting our body. It is an active material\, th
at is a medium for which deformations can occur in absence of loads\, give
n an external stimulus. In the talk I will introduce a mathematical method
used to model such materials. In a hyperelastic setting\, it will be show
n that it is possible to fit the parameters of the model to recover experi
mental data.\n\nFinally\, we consider the loss of muscle performance. We m
odel it in two components\, both typical of a disease named sarcopenia: th
e loss of muscle mass and the loss of activation. The former is encoded in
the model by a percentage parameter which measures the fraction of muscle
fibres which are lost\; the latter is represented by a damage parameter w
hich reduces the active part of the stress by a given percentage. The lack
of experimental data on the elastic properties of a sarcopenic muscle tis
sue does not allow any fitting of the two parameters\; however\, the propo
sed model can be numerically implemented using finite element methods and
different scenarios can be studied.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/61/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Filipa Peres (INL - International Iberian Nanotechnology Laborator
y)
DTSTART:20230427T140000Z
DTEND:20230427T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/62
DESCRIPTION:Title: An introduction to Pauli-based computation\nby Filipa Peres
(INL - International Iberian Nanotechnology Laboratory) as part of Maths s
eminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbstra
ct\nIn this talk\, I will discuss how universal quantum computation can be
achieved by performing only adaptive measurements of compatible\, multi-q
ubit Pauli operators. This is a model of quantum computation known as Paul
i-based computation [1]. Additionally\, I will discuss how this framework
can be used to compile (universally general) Clifford+T quantum circuits [
1\,2] and to perform hybrid quantum-classical computation [1\,2].\nTo reac
h the talk’s goals I will start with a pedagogical introduction into the
Pauli and Clifford groups\, the stabilizer formalism and discuss briefly
how to do magic state injection.\n\n[1] S. Bravyi\, G. Smith\, and J. A. S
molin\, Trading Classical and Quantum Computational Resources\, Phys. Rev.
X 6\, 021043 (2016).\n\n[2] F. C. R. Peres and E. F. Galvão\, Quantum ci
rcuit compilation and hybrid computation using Pauli-based computation (20
22)\, arXiv:2203.01789.\n\nContact: Mark Howard\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/62/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Svetlana Petrenko (University College London)
DTSTART:20230525T140000Z
DTEND:20230525T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/63
DESCRIPTION:Title: Modelling of Silica Pattern Formation in Diatoms Using a Continu
um Approach\nby Svetlana Petrenko (University College London) as part
of Maths seminars at the University of Galway\n\nLecture held in ADB1020.
\n\nAbstract\nDiatoms are unicellular photosynthetic algae that form their
cell wall\, or frustule\, of diatoms is formed by silica deposition vesic
le (SDV)\, within which the water-soluble silicic acid\, taken up by diato
ms from the environment\, precipitates into amorphous silica. The frustule
’s structured pattern is specific to each species of the diatoms. Furthe
rmore\, silaffins are specialized proteins that form silicon oxide into na
nospheres. Silaffins as well as LCPAs are both contained in SDV. Additiona
lly\, phosphate ions play a crucial role in the phase separation of the or
ganic component. In this talk\, a phase separation model is used to study
the formation of aggregates of organic molecules. Thus\, we can assume tha
t an organic template may be guide of the silica structure formation. The
model couples phase separation with chemical reaction the resulting dissoc
iation into two components. Numerical simulations are employed to investig
ate the development of regular stationary patterns. The obtained results s
how that the choice of Gibbs free energy has significant impact on the mor
phology of the pattern. Varying concentration\, initial and boundary condi
tions can lead to a range of different structures. The talk will also addr
ess the influence of the growing domain on pattern formation.\n\nContact:
Stephan Rudykh\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/63/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nicola Fitz-Simon (University of Galway)
DTSTART:20230524T130000Z
DTEND:20230524T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/64
DESCRIPTION:Title: Mathematical and statistical modelling for the covid-19 pandemic
in Ireland\nby Nicola Fitz-Simon (University of Galway) as part of Ma
ths seminars at the University of Galway\n\nLecture held in ADB1020.\n\nA
bstract\n[Part of the Stokes Modelling Workshop]\n\nDuring the covid-19 pa
ndemic\, together with collaborators in Galway and France\, I was using ma
thematical and statistical models to try to understand and predict the epi
demiological dynamics of the disease. In this talk I will explain how we
developed a mathematical model to predict accurately the short-term dynami
cs of covid-19\, and which we fitted to longitudinal disease outcome data
from Ireland. I will discuss statistical challenges such as collecting ap
propriate data\, and using the data to estimate the model parameters and q
uantify uncertainty via a Bayesian approach. Finally I will describe how
we used the model to make counterfactual predictions of what might have ha
ppened under different interventions to control the spread of the virus.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/64/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Mikhail Poluektov (The University of Dundee\, UK)
DTSTART:20230804T140000Z
DTEND:20230804T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/65
DESCRIPTION:Title: Propagation and stability of stress-affected transformation fron
ts in solids\nby Dr. Mikhail Poluektov (The University of Dundee\, UK)
as part of Maths seminars at the University of Galway\n\nLecture held in
ADB1020.\n\nAbstract\nThere is a wide range of problems in continuum mech
anics that involve transformation fronts\, which are non-stationary interf
aces between two different phases in a phase-transforming or a chemically-
transforming material. From the mathematical point of view\, the considere
d problems are represented by systems of non-linear PDEs with discontinuit
ies across non-stationary interfaces\, kinetics of which depend on the sol
ution of the PDEs. Such problems have a significant industrial relevance
– an example of a transformation front is the localised stress-affected
chemical reaction in Li-ion batteries with Si-based anodes. Since the kine
tics of the transformation fronts depends on the continuum fields\, the tr
ansformation front propagation can be decelerated and even blocked by the
mechanical stresses. This talk will focus on three topics: (1) the stabili
ty of the transformation fronts in the vicinity of the equilibrium positio
n for the chemo-mechanical problem\, (2) a fictitious-domain finite-elemen
t method (CutFEM) for solving non-linear PDEs with transformation fronts a
nd (3) an applied problem of Si lithiation.\n\nContact: Stephan Rudykh\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/65/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Abolfazl Mohajer (University of Galway)
DTSTART:20230921T140000Z
DTEND:20230921T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/66
DESCRIPTION:Title: Galois Coverings of Curves and Their Families\nby Dr. Abolfa
zl Mohajer (University of Galway) as part of Maths seminars at the Univer
sity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nWe describe Galois
covers of algebraic curves and their families by using the eigenspaces of
local systems associated to push-forward of sheaves by the structure morp
hism. More precisely\, if $f:C\\to Y$\, we consider the sheaves $f_*(\\C)$
. The group action by the Galois group $G$\, yields a decomposition of thi
s sheaf into irreducible local systems corresponding to irreducible repres
entations of the group $G$. If $\\rho$ is such an irreducible representati
on\, the eigensheaf $L_{\\rho}$ of $f_*(\\C)$ gives rise to another useful
sheaf which is related to the homology group $H_1(C\,\\C)$. Using this\,
we describe the action of the Galois group $G$ on the homology group. As a
particular example\, we study the Dihedral covers of $\\P^1$.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/66/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Tuite (University of Galway)
DTSTART:20230928T140000Z
DTEND:20230928T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/68
DESCRIPTION:Title: New Applications of Bers Quasiforms on Riemann Surfaces\nby
Michael Tuite (University of Galway) as part of Maths seminars at the Uni
versity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nBers quasiforms
were introduced in the 1960s in order to construct potential functions fo
r holomorphic differential forms on a Riemann surface of genus $g>1$. I wi
ll discuss some background ideas and two novel applications concerning gen
eral meromorphic forms:\n\n\n \n(I) the expansion of any such general form
in terms of Bers quasiforms and \n\n(II) a canonical differential operato
r which acts on the space of such forms. \n\nThe talk is aimed at a genera
l audience with familiarity of standard complex analysis. The talk is base
d on joint work with Michael Welby.\n\nCoffee/tea/cakes/biscuits will be s
erved in ADBG022 from 2:30pm\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/68/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conall Kelly (University College Cork)
DTSTART:20231102T150000Z
DTEND:20231102T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/69
DESCRIPTION:Title: Numerical solution of nonlinear stochastic systems with jump per
turbations.\nby Conall Kelly (University College Cork) as part of Math
s seminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbs
tract\nConsider a $d$-dimensional system of Itô-type stochastic different
ial equations with $m$ independent diffusions where the drift and diffusio
n coefficients are not globally Lipschitz continuous but instead only loca
lly Lipschitz and together satisfy a Khasminskii-type condition. It is kno
wn that both the explicit Euler-Maruyama and Milstein schemes fail to conv
erge for such systems when applied over a uniform mesh.\n\nWe construct an
adaptive mesh that responds to the local behaviour of solutions by reduci
ng the stepsize as solutions approach the boundary of a sphere\, invoking
a convergent backstop method in the (rare) event that the timestep becomes
too small. With such a mesh\, order-one strong $L_2$-convergence of the s
cheme can be ensured\, even when the diffusion coefficients of the SDE are
non-commutative.\n\nWe examine how this adaptive strategy can be modified
to allow for the discretisation of systems of SDEs perturbed by a Poisson
jump process independent of the perturbing diffusion processes\, without
loss of order\, as long as the independent jump times can be pre-computed
and included in the adaptive mesh.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/69/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Katrin Wendland (Trinity College Dublin)
DTSTART:20240307T150000Z
DTEND:20240307T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/70
DESCRIPTION:Title: Symmetries of Z_3-orbifold K3s\nby Katrin Wendland (Trinity
College Dublin) as part of Maths seminars at the University of Galway\n\n
Lecture held in ADB1020.\n\nAbstract\nK3 surfaces are special complex surf
aces. Examples that are particularly\nwell understood are the so-called Ku
mmer surfaces\, which may be\nobtained by orbifolding complex two-tori by
the group Z_2. There exists an\nextensive body of literature on such Kumme
r surfaces.\nIn joint work with K. Budzik\, A. Taormina\, M. Ungureanu and
I. Zadeh\,\nwe are generalizing these results from Kummer surfaces to K3
surfaces\nthat are obtained as orbifolds of complex two-tori by the group
Z_3\, with\na particular interest in describing their symmetries convenien
tly.\nThe talk will give an introduction to the relevant techniques and re
sults on\nsuch Z_3-orbifold K3s.\n\nContact: Michael Tuite\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/70/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr Nicholas Moore
DTSTART:20231005T140000Z
DTEND:20231005T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/71
DESCRIPTION:Title: The Formation of Karst Pinnacles\nby Dr Nicholas Moore as pa
rt of Maths seminars at the University of Galway\n\nLecture held in ADB10
20.\n\nAbstract\nRecent experiments demonstrate how dissolution\, in conju
nction with gravitationally-induced convective flows\, can create sharp ge
ometric features. These laboratory-created structures give insight into ge
ological features known as karst pinnacles. A new computational approach\,
specially tailored to the hyberbolic nature of the underlying PDEs\, reve
als convergence to a morphological attractor with high\, yet finite\, tip
curvature. These results reverse previous hypotheses on shock formation (i
.e. finite-time blowup of tip curvature)\, agree well with laboratory expe
riments\, and enable simple estimates for the age of geological structures
.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/71/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ted Hurley
DTSTART:20231109T150000Z
DTEND:20231109T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/73
DESCRIPTION:Title: What are your favourite matrices? Why? What are your favourite *
types* of matrices? How are they made and for what purpose?\nby Ted H
urley as part of Maths seminars at the University of Galway\n\nLecture he
ld in ADB1020.\n\nAbstract\nMatrices are built and designed by applying
procedures from lower order matrices. Matrix tensor products\, direct sums
or multiplication of matrices are such procedures and a matrix built from
these is said to be a $\\textit{separable}$ matrix. A ${\\textit non-sep
arable}$ matrix is a matrix which is not separable and is often referred
to as $\\textit{an entangled matrix}$. The matrices built may retain pro
perties of the lower order matrices or may also acquire new desired prope
rties not inherent in the constituents. \n\nHere we discuss design metho
ds for non-separable matrices. The matrices to be designed may need to be
of a particular type or for a specific purpose or application. . \n \nNon-
separable matrices of required types are required for applications and ot
her uses\; they can capture the structure in a unique way and thus perform
much better than separable matrices. As time allows\, I will discuss no
n-separable constructions of unitary\, (and paraunitary matrices to be exp
lained) and matrices for information systems such as for filter banks\, co
ding theory and other signal processing processes.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/73/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Noor Kherrah (PhD Viva) (University of Galway)
DTSTART:20231117T100000Z
DTEND:20231117T110000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/75
DESCRIPTION:Title: Differences in immunogenicity between cancer mutation signatures
shed light on immunoediting\nby Noor Kherrah (PhD Viva) (University o
f Galway) as part of Maths seminars at the University of Galway\n\nLectur
e held in ADB1020.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/75/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Nina Snigireva (University of Galway)
DTSTART:20240111T150000Z
DTEND:20240111T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/76
DESCRIPTION:Title: Properties of Polynomials on Banach Lattices\nby Nina Snigir
eva (University of Galway) as part of Maths seminars at the University of
Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this talk we will disc
uss properties of $m$-homogeneous polynomials which are specific to Banach
lattices. In particular\, in this setting we can consider order converge
nce which leads naturally to the definition of order continuous polynomial
s. These important concepts allow us to extend some results for linear ope
rators on Banach lattices to the nonlinear case of $m$-homogenous polynomi
als. We will also consider the regular norm for homogeneous polynomials an
d show how it differs from the classical supremum norm.\n\nThis is joint w
ork with C. Boyd and R. Ryan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/76/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Brendan Masterson (Middlesex University London)
DTSTART:20240215T150000Z
DTEND:20240215T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/77
DESCRIPTION:Title: Authenticity in Learning\, Teaching and Assessment.\nby Bren
dan Masterson (Middlesex University London) as part of Maths seminars at t
he University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nMiddlese
x University has a practice-based approach supporting students to develop
the knowledge and skills they need for their professional careers. Taking
this as our guiding principle while revalidating our maths programmes we d
ecided to rethink our learning teaching and assessment strategies. This in
volved moving away from traditional mathematical teaching methodologies to
wards a more inclusive and authentic approach while maintaining the necess
ary rigour for a mathematics degree.\nTo prepare students for their mathem
atical careers we embed a number of techniques that allow them to develop
particular employability skills throughout their degree. These include the
use of industry standard tools in class and a module dedicated to problem
-solving and communication. We also distinguish between authentic assessme
nt\, that is submission formats that are closely aligned with work tasks\,
and authentic problems\, which use real data\, complicated real-life mode
ls or the kind of imprecise formulation that typifies real-world problems.
\nIn this talk I will discuss our rationale for this approach to learning
and teaching\, I will give examples of our assessment approach and how we
mitigate against the barriers to equality of opportunity that this approa
ch has made explicit.\n\nContact: Kirsten Pfeiffer\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/77/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Joshua Maglione (University of Galway)
DTSTART:20240208T150000Z
DTEND:20240208T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/79
DESCRIPTION:Title: Categorifying characteristic subgroups: a characterization\n
by Joshua Maglione (University of Galway) as part of Maths seminars at the
University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nMotivated
by isomorphism testing of groups and algebras\, we study characteristic su
bgroups and structures that are invariant under automorphisms more broadly
. Sticking with groups for simplicity\, we prove that characteristic subgr
oups both give rise to and come from biaction homomorphisms of categories
acting on categories. The primary corollary of this is a roadmap to find n
ew characteristic subgroups: build bridges between the category of groups
and other categories. We demonstrate this by categorifying classical chara
cteristic subgroups.\n\nThis is joint with P. A. Brooksbank\, H. Dietrich\
, E. A. O'Brien\, and J. B. Wilson.\n\nContact: Davood & Mark\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/79/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leo Creedon (ATU Sligo)
DTSTART:20240222T150000Z
DTEND:20240222T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/80
DESCRIPTION:Title: The ring of derivations of a group algebra\, and new partial al
gebraic structures which are almost semigroups\, groups and rings\nby
Leo Creedon (ATU Sligo) as part of Maths seminars at the University of Ga
lway\n\nLecture held in ADB1020.\n\nAbstract\nIt is well known that the de
rivations of an associative algebra form a Lie algebra. It is rarely the c
ase that this set of derivations forms an associative algebra. In this tal
k the finitely generated group algebras whose derivations form an associat
ive algebra are fully determined. Necessary and sufficient conditions on a
group algebra of a finitely generated group G over a finite field K are d
etermined such that the set of derivations of the group algebra form an as
sociative K-algebra. \n \nSince the composition of derivations is rarely a
derivation\, this motivates the following question: what (non Lie) algebr
aic structure do derivations have? This leads to the definition of new par
tial algebraic systems called ringlets (not quite rings)\, grouplets (not
quite groups)\, and semigrouplets (not quite semigroups)\, as well as rela
ted ideas of p…lets\, sub…lets\, idealets\, and quotient pringlets. De
rivations of associative algebras give examples of such structures.\n \nTh
is is joint work with Kieran Hughes.\n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/80/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Rachel Quinlan (University of Galway)
DTSTART:20240314T150000Z
DTEND:20240314T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/81
DESCRIPTION:Title: Curiosities of Alternating Sign Matrices\nby Rachel Quinlan
(University of Galway) as part of Maths seminars at the University of Gal
way\n\nLecture held in ADB1020.\n\nAbstract\nThis talk will report on some
activity from my period of sabbatical leave in the second half of 2023. I
t will start with a little of the lore of alternating sign matrices (ASMs)
\, and some of the (surprising) reasons for interest in these combinatoria
l objects. Then we will discuss some work in progress (jointly with Cian O
'Brien) on ASMs with special algebraic or matrix-theoretic properties\, in
cluding idempotence and finite multiplicative order.\n\nContact: Davood Ro
shan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/81/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mehakpreet Singh (University of Limerick)
DTSTART:20240328T150000Z
DTEND:20240328T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/82
DESCRIPTION:Title: Efficient Mass-Preserving Finite Volume Approach for the Rennet-
Induced Coagulation Equation\nby Mehakpreet Singh (University of Limer
ick) as part of Maths seminars at the University of Galway\n\nLecture hel
d in ADB1020.\n\nAbstract\nThe coagulation of casein micelles caused by en
zymes is a critical step in the dairy industry for cheese manufacture. Dur
ing enzymatic coagulation of milk\, three processes occur: enzymic proteol
ysis\, coagulation\, and gelation. This study presents the first numerical
approach based on a finite volume scheme for describing the enzyme-induce
d coagulation of casein micelles. The finite volume scheme is mainly conce
rned with ensuring mass conservation and developed on the assumption that
the particles are concentrated on the mean of each cell of the discretisat
ion. The key advantages of the new technique are its simple mathematical f
ormulation and its robustness that allow it to be implemented on any type
of grid and tailored to different coagulation kernels. The accuracy of the
new approach is compared with newly derived analytical results for severa
l gelling and non-gelling coagulation kernels. The comparison demonstrates
that the new approach closely matches the exact results. In order to anal
yse the convergence behaviour of different order moments\, various refined
non-uniform grids have been taken into consideration.\n\nContact: Niall M
adden\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/82/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Robert Osburn (University College Dublin)
DTSTART:20240130T150000Z
DTEND:20240130T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/83
DESCRIPTION:Title: Strange identities\, the Habiro ring and resurgence\nby Robe
rt Osburn (University College Dublin) as part of Maths seminars at the Un
iversity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn 1997\, Kont
sevich introduced a curious expression which does not converge on any open
subset of the complex numbers\, but is well-defined at a root of unity. M
oreover\, it is an element of the Habiro ring which satisfies a "strange i
dentity" due to Zagier. In this talk\, we discuss resurgence properties fo
r the Borel transform of elements in the Habiro ring which satisfy a gener
al type of strange identity. As an application\, we discuss evidence in re
lation to conjectures in quantum topology due to Costin and Garoufalidis.
This is joint work with Samuel Crew and Ankush Goswami.\n\nContact: Michae
l Tuite\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/83/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Victoria Sánchez Muñoz (University of Galway)
DTSTART:20240125T150000Z
DTEND:20240125T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/84
DESCRIPTION:Title: How Maths Helped Me to Annoy My Insurance Company\nby Victor
ia Sánchez Muñoz (University of Galway) as part of Maths seminars at the
University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this ta
lk I will tell the full story behind the article “The Estimation of Wind
Speed: Challenging the Insurance Company’s Decision”\, awarded with t
he Graham Hoare Prize 2022 by the Institute of Mathematics and Its Applica
tions (IMA) in the UK. Long story short: the insurance company refused to
cover some damages on a blind caused by the wind but my researcher side di
d not agree so I challenged their decision using some very basic maths and
physics.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/84/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Damian Markham (Sorbonne University)
DTSTART:20240229T153000Z
DTEND:20240229T163000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/85
DESCRIPTION:Title: Secure Networks of Quantum Sensors\nby Damian Markham (Sorbo
nne University) as part of Maths seminars at the University of Galway\n\n
Lecture held in ADB1020.\n\nAbstract\nQuantum sensors allow for more sensi
tivity than their classical counterparts. Entangling quantum sensors in a
network allows for further advantages in efficiency of sensing for global
features (such as average phase or gradient)\, and in security.\nWe will d
iscuss some recent results in this direction.\n\nContact: Michael McGettri
ck\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/85/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lydia King (University of Galway)
DTSTART:20240130T093000Z
DTEND:20240130T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/86
DESCRIPTION:Title: The Role of Genomic Data in Stratifying Patients within Predicti
ve Models for Breast Cancer Survival Outcome\nby Lydia King (Universit
y of Galway) as part of Maths seminars at the University of Galway\n\nLec
ture held in ADB1020.\nAbstract: TBA\n\nContact: Emma Holian\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/86/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Doireann O'Kiely (University of Limerick)
DTSTART:20240425T140000Z
DTEND:20240425T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/87
DESCRIPTION:Title: Moving out of plane: wrinkling and buckling\nby Doireann O'K
iely (University of Limerick) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThin structures typica
lly buckle out of plane when compressed\, giving rise to a myriad of shape
s. These range from classic Euler buckling to honey coiling to microscale
wrinkling patterns\, and can occur in both fluid and solid systems. Some
of these situations correspond to a ''failure''\, but others may be explo
ited for applications such as flexible electronics. \n\n \n\nIn this tal
k I will introduce some examples of buckling and wrinkling mechanisms\, di
scussing their uses and the corresponding challenges. I will introduce ma
thematical models for addressing these challenges\, discussing the new ins
ights gained and some open questions.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/87/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hannah Conroy Broderick (University College Dublin)
DTSTART:20240418T140000Z
DTEND:20240418T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/88
DESCRIPTION:Title: A simple formula for determining in vivo stress difference in hu
man skin\nby Hannah Conroy Broderick (University College Dublin) as pa
rt of Maths seminars at the University of Galway\n\nLecture held in ADB10
20.\n\nAbstract\nSkin is the largest organ in the human body and is respon
sible for many important functions\, including acting as the body's initia
l line of defense. It is under a constant state of tension in the body\, a
nd this tension plays a critical role in surgical outcomes. Common scar ma
nagement guidelines state that incisions should be made parallel to the ma
ximal tension\, however there is currently no accepted way to measure this
tension in a clinical setting non-destructively\, with surgeons typically
relying on qualitative techniques and their own experience. Here\, we dev
elop a technique to measure the stress difference in the body using an aco
ustic measurement technique that relies on a simple analytic formula.\n\nW
e derive a simple formula from the acoutoelastic theory that relates the s
tress difference to the wave velocities\, with a known given error. We val
idate this formula computationally using Finite Element simulations and fi
nd that the formula can predict the stress difference accurately in a vari
ety of situations. Final validation is carried out experimentally on synth
etic tissue phantoms\, where we find very good agreement with the simple f
ormula. The proposed formula is universal and will enable on-demand patien
t-specific measurement of stress in skin in a simple non-invasive manner.\
n\nThis is joint work with Wenting Shu\, Michel Destrade and Aisling NÃ
Annaidh.\n\nContact: Michel\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/88/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Victoria Sánchez Muñoz (University of Galway)
DTSTART:20240301T110000Z
DTEND:20240301T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/89
DESCRIPTION:Title: Boolean games played in a triangle using bi-partite and tri-part
ite entanglement\nby Victoria Sánchez Muñoz (University of Galway) a
s part of Maths seminars at the University of Galway\n\nLecture held in A
MB-G065 (Arts Millenium but by the School of Psychology).\n\nAbstract\nI w
ill briefly introduce the research conducted during my PhD\, which focused
on studying Boolean games when played by three players in a triangle netw
ork configuration. The players share two 3-qubit quantum states and three
2-qubit quantum states\; the aim is comparing these two types of quantum r
esources in such a scenario.\n\nContact: Michael McGettrick\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/89/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Brian O’Sullivan (University of Galway)
DTSTART:20240222T093000Z
DTEND:20240222T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/90
DESCRIPTION:Title: Computational approaches to identify and explain sources of erro
r in cancer somatic mutation data\nby Brian O’Sullivan (University o
f Galway) as part of Maths seminars at the University of Galway\n\nLectur
e held in ADB1020.\n\nAbstract\nErrors in identifying somatic mutations in
cancer samples can have critical implications\, leading to missed treatme
nt opportunities or misleading research findings. We developed vcfView\, a
n interactive Rshiny application\, to reevaluate variants excluded from an
alysis\, allowing us to incorporate biological context into our assessment
and identify overlooked putative somatic variants. Additionally\, we deve
loped a simulation framework to generate comprehensive and realistic tumou
r genomic sequencing data\, accurately representing the frequency profile
observed in real sequencing data and documenting the true source of each n
on-reference base. The framework not only identifies variant caller errors
but also enables us to explain the reasons behind erroneous calls. Using
the GATK Mutect2 variant calling pipeline\, we apply this framework to hig
hlight and explain sources of error in somatic mutation data and biases in
somatic allele frequency estimation. Finally\, we apply these methods to
low-depth\, heavily DNA-damaged\, tumour-only sequencing data from an unpu
blished cohort of 60 pancreatic cancer patients and recover clinically and
research-relevant information.\n\nContact: Cathal Seoighe\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/90/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Koushik Paul (University of Galway)
DTSTART:20240326T110000Z
DTEND:20240326T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/91
DESCRIPTION:Title: Novel Construction of Specht Modules for Monomial Groups\nby
Koushik Paul (University of Galway) as part of Maths seminars at the Uni
versity of Galway\n\nLecture held in AMB-G066\, Psychology Wing\, Arts Mil
lennium Building.\n\nAbstract\nIn this PhD work\, I develop a new method t
o construct the Specht modules using Specht matrices for families of symme
tric groups\, monomial groups and hyperoctahedral groups. Specht modules a
ppear in the representation theory of symmetric groups with the notions of
Young symmetrizers and thereafter building the notions of polytabloids tu
rn into basis of the Specht module corresponding to some partition of a na
tural number. Here I develop a new combinatorial way to replace polytablo
ids by columns of Specht matrices corresponding to the standard tableaux.
The set of such columns give rise to the basis of the Specht modules. This
new construction is very straight forward and easy to understand as it us
es simple linear algebraic techniques such as solving system of linear equ
ations.\n\nContact: Gotz Pfeiffer\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/91/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Prof. Murray Aitkin (University of Melbourne)
DTSTART:20240509T140000Z
DTEND:20240509T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/92
DESCRIPTION:Title: The Bayesian Bootstrap: the Universal Multinomial Model and non-
informative Dirichlet Prior for statistical analysis.\nby Prof. Murray
Aitkin (University of Melbourne) as part of Maths seminars at the Univer
sity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nWhere did this com
e from\, and where is it going?\n\nIt has a long history\, and has possibl
y an even longer development period coming ...\n\nWhat does it offer?\n\n
Fully model-based Bayesian nonparametric analysis of conventional structu
ral models:\n No Gaussian or other response distributions needed -- just
the multinomial.\n The non-informative Dirichlet prior: it's all in the
data.\n No hypothetical repeated samples.\n No asymptotics.\n\nWhere is
it going?\n\nSome examples:\n\nAny GLM analysis can be made robust against
distribution failure\, provided the\nMLEs represent the population parame
ters of interest\, as in linear regression.\n\nThe GLM analysis regresses
the ``working variate" on the covariates with iterative weights.\nFor the
Bayesian analysis\, at convergence of the GLM algorithm the converged work
ing variate is\nregressed linearly on the covariates with random weights f
rom the Dirichlet posterior\nwith the non-informative prior.\n\nExample: L
ogistic regression: the Finney vasoconstriction data (Aitkin 2023 p. 287).
\nThe binary vasoconstriction response is modelled logistically on two cov
ariates\, log rate and\nlog volume.\n\nThis work has been supported at var
ious times by:\n\nthe UK Social Sciences Research Council and UK Economic
and Social Research Council\; \n\nthe National Center for Education Stati
stics and the Institute of Education Sciences of the \n\nUS Department of
Education\; and the Australian Research Council.\n\nContact: John Hinde\,
Carl Scarrott\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/92/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marcelo Dias (University of Edinburgh)
DTSTART:20240425T110000Z
DTEND:20240425T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/93
DESCRIPTION:Title: [Engineering Seminar] Some Investigations on Stress Localization
in Thin Elastic Sheets\nby Marcelo Dias (University of Edinburgh) as
part of Maths seminars at the University of Galway\n\nLecture held in G01
9\, Large Lecture Theatre\, Human Biology Building.\n\nAbstract\n[This i
s part of the School of Engineering Seminar Series]\n\nKirigami\, an ancie
nt art of paper cutting\, serves as a source of inspiration for innovating
in pattern formation and effective mechanical response of thin elastic sh
eets\, thus offering promising ways for reconfigurable structures such as
large deployable structures and microstructures like stretchable electroni
cs. Through manipulation of cut patterns\, kirigami sheets exhibit nonline
ar responses at the macroscopic level\, stemming from stress localization
and instabilities. This talk delves into these phenomena\, particularly fo
cusing on local behaviour of a single cut—an elemental geometric unit in
kirigami design.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/93/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mark Dukes (University College Dublin)
DTSTART:20240905T150000Z
DTEND:20240905T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/94
DESCRIPTION:Title: Ascent sequences\, weak ascent sequences\, and related combinato
rial structures\nby Mark Dukes (University College Dublin) as part of
Maths seminars at the University of Galway\n\nLecture held in ADB1020.\n\
nAbstract\nLet a=(a_1\,a_2\,...\,a_n) be a sequence of nonnegative integer
s. An ascent in the sequence a is an index k for which a_{k+1}>a_k. An asc
ent sequence is a sequence of non-negative integers that begins with zero
and in which every entry is bounded by one more than the number of ascents
preceding it. These sequences were introduced by Bousquet-Melou\, Claesso
n\, Dukes and Kitaev (2010) and enjoy a rich collection of properties. In
particular\, they uniquely encode a variety of combinatorial structures. T
hese include: Fishburn permutations\, (2+2)-free posets\, a class of integ
er matrices that have since become known as Fishburn matrices\, and Stoime
now matchings. Recently\, Benyi\, Claesson and Dukes (2023) introduced wea
k-ascent sequences\, a variant of ascent sequences\, and showed them to ha
ve a similarly rich collection of correspondences. Building on this\, a fu
rther generalization was proposed in Dukes and Sagan (2024) and these are
termed "difference d-ascent sequences". Properties of the corresponding d
ifference ascent sequences are that several mappings from the weak case ca
n be extended to bijections for general d\, while the extensions of others
continue to be injective (but not surjective). This talk will present an
overview of recent results on weak and difference ascent sequences. It is
joint work with Beata Benyi\, Anders Claesson\, and Bruce Sagan.\n\n \n\n
Contact: Angela Carnevale\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/94/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Prof Christopher Voll (Bielefeld University)
DTSTART:20240515T150000Z
DTEND:20240515T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/95
DESCRIPTION:Title: Ehrhart theory\, Hecke series\, and vertex enumeration in affine
buildings\nby Prof Christopher Voll (Bielefeld University) as part of
Maths seminars at the University of Galway\n\nLecture held in ADB1020.\n
\nAbstract\nThe number of integral points of the integral inflations of a
lattice polytope in Z^n is given by the polytope's Ehrhart polynomial\, a
well-studied invariant in polyhedral geometry. How is this invariant\ndist
ributed over all superlattices of Z^n? Viewed locally\, this question lead
s us to consider families of counting functions on the vertices of affine
buildings associated with classical $p$-adic groups.\n\nI will explain how
these counting functions are connected with classical multivariate genera
ting functions arising in number theory\, viz. Hecke series\, and eigenfun
ctions for Hecke operators. I will assume no previous knowledge on Ehrhart
or Hecke theory.\n\nThis is joint work with Claudia Alfes and Joshua Magl
ione.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/95/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr. Svetlana Petrenko (University College London)
DTSTART:20240523T140000Z
DTEND:20240523T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/96
DESCRIPTION:Title: Mathematical models of diatom frustule patterning\nby Dr. Sv
etlana Petrenko (University College London) as part of Maths seminars at t
he University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nDiatoms
are phytoplankton which are characterized by intricately micropatterned sh
ells known as frustules. These organisms play a pivotal role in the ecosys
tem\, contributing approximately 40% to primary production and 20-30% of o
xygen we breath. They populate almost every aquatic habitat.\nThe diatom f
rustule consists of two overlapping halves. These parts consist of silica
exhibits geometrically shaped surfaces with patterns of small pores. The m
icropatterning of the silica is of great interest in nanotechnology due to
the frustules' exceptional strength and unique optical properties. Nanopa
tterned biosilica derived from diatoms serves as a versatile template for
the fabrication of other materials.\nThe formation of regularly structured
silica valves in diatoms is a captivating process in biomineralization\,
involving specific organic molecules such as long-chain polyamines\, silaf
fins\, and silacidins. The molecular structure of synthesized polyamines g
reatly affects the quantity\, size\, and shape of silica precipitates. Exp
erimental findings indicate that silica precipitation occurs at specific c
oncentrations of phosphate ions\, with higher concentrations resulting in
larger aggregates of organic molecules that serve as templates for silica
formation.\nOur study focuses on the hypothesis that pattern formation in
diatom valve structures is driven by the phase separation of species-speci
fic organic molecules\, with the evolving organic structures acting as tem
plates for silica deposition. We specifically investigate the role of phos
phate ions in the self-assembly of long-chain polyamines and analyze how t
heir reaction with organic molecules impacts the morphology of the organic
template. By varying the model parameters\, including degree of dissociat
ion and initial concentrations of reacting components\, we show that the r
esulting geometric features of the patterns are highly dependent on these
factors. \nFurthermore\, we explore the scenario where an initial array of
organic droplets serves as a static template for silica deposition\, cons
idering the effects of "prepatterning" by the silica costae in the base la
yer. We obtain numerical solutions that generate a diverse range of two-di
mensional patterns closely resembling the valve structures observed experi
mentally. The talk will also address the influence of the growing domain o
n pattern formation.\n\nContact: Stephan Rudykh\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/96/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marston Conder (University of Auckland\, New Zealand)
DTSTART:20240904T140000Z
DTEND:20240904T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/97
DESCRIPTION:Title: Recent discoveries about finite quotients of triangle groups
\nby Marston Conder (University of Auckland\, New Zealand) as part of Math
s seminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbs
tract\nFor integers $k\,l\,m > 1$\, the ordinary {\\em triangle group\\/}
$\\Delta^+(k\,l\,m)$ is the group with presentation $\\langle\\\, x\,y \\
| \\ x^k = y^l = (xy)^m = 1 \\\,\\rangle$\, or equivalently $\\langle\\\,
x\,y\,z \\ | \\ x^k = y^l = z^m = xyz = 1 \\\,\\rangle$. Such groups play
an important role in the study of large automorphism groups of algebraic
curves and compact Riemann surfaces\, and of regular maps on orientable an
d non-orientable surfaces. Much of the early part of this study (dating b
ack over 100 years to work by Dyck\, Klein and Burnside\, for example) con
sidered only small quotients of triangle groups\, and subsequent work (by
Macbeath\, Higman and others) concentrated on finite simple quotients (suc
h as $\\PSL(2\,q)$\, the alternating groups\, and even some of the excepti
onal finite simple groups). But surprisingly\, the recent determination o
f all orientably-regular maps of `small' genus (now up to genus 1501) has
shown that finite simple groups and finite insoluble groups account respec
tively for less than 0.1\\% and less than 7\\% of the associated quotients
of ordinary triangle groups (with quotient order up to about $100000$)\,
while finite soluble quotients account for over 93\\%. Very little attenti
on has been paid to soluble quotients\, and in this talk I will describe s
ome recent research (with my PhD student Darius Young) that helps to corre
ct this relative lack of attention. In particular\, I will explain how eve
ry non-perfect hyperbolic ordinary triangle group has a smooth finite solu
ble quotient of derived length $c$ for some $c \\le 3$\, and has infinitel
y many such quotients of derived length $d$ for every $d > c$. Also I wil
l report on some work by Darius in the last few weeks in which he proved t
hat the natural density (in the positive integers) of the set of orders of
finite quotients of a triangle group $\\Delta^+(k\,l\,m)$ is {\\bf zero}
for every triple $(k\,l\,m)$. This work completed an investigation by L
arsen (2001)\, but avoids resorting to the classification of finite simple
groups. It also led to the following (proved by MC \\& Gabriel Verret)
: the natural density of the orders of finite quotients of the free produc
t $C_p * C_q = \\langle\\\, x\,y \\ |\\ x^p = y^q = 1\\\,\\rangle$ is zero
whenever $p$ or $q$ is odd\, but is positive whenever $p$ and $q$ are eve
n. Furthermore\, this had unexpected consequences for the densities of ord
ers of finite arc-transitive graphs of given valency\, and also led to a m
uch more general theorem about possibilities for the density of orders of
finite quotients of a given finitely-generated infinite group.\n\nContact:
Angela Carnevale\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/97/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr Artur Gower (University of Sheffield)
DTSTART:20240528T110000Z
DTEND:20240528T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/98
DESCRIPTION:Title: Designing sensors for wind turbines and other big rotating thing
s\nby Dr Artur Gower (University of Sheffield) as part of Maths semina
rs at the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nF
or a wind turbine to efficiently convert movement into energy it needs to
rotate with very little resistance. As well as maintaining a smooth moveme
nt\, the rotating parts of turbines need to support large forces due to wi
nds\, waves\, or gravity. Bearings are the components that enable both smo
oth rotation while also supporting variable loads. It is an ongoing challe
nge to design\, and maintain\n\nbearings that are: large (meters in diamet
er for wind turbines)\, under large forces\, or rotate at high speeds (lik
e industrial centrifuges). Ideally we want these components\, and other ro
tating components\, to last for decades without damage\, or at least minim
ise the cost of maintenance.\n\n \n\nIn this talk\, I will give a light ov
erview of wind turbines\, why we want to put sensors on them\, and how mat
hematics is crucial to decide where to put sensors and how to make sense o
f what is measured.\n\nContact: Balbi\, Valentina\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/98/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr Tom Shearer (University of Manchester)
DTSTART:20240529T130000Z
DTEND:20240529T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/99
DESCRIPTION:Title: Mathematical Modelling of Biological Soft Tissues\nby Dr Tom
Shearer (University of Manchester) as part of Maths seminars at the Univ
ersity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this talk\, I
will discuss how mathematics can be used to model the mechanical behaviou
r of biological soft tissues. In particular\, I will use aspects of the th
eory of solid mechanics (nonlinear elasticity and viscoelasticity) to expl
ain how the microscopic structures in tendons and skin affect their respon
ses to forces and deformations. Both of these tissues are constructed prim
arily from a protein called collagen\, which forms nanoscopic fibres calle
d fibrils. The differing three-dimensional arrangements of these fibrils f
rom tissue to tissue give rise to highly varied and specialised mechanics.
By understanding the relationships between the structure and function of
these tissues\, we can inform the design of the next generation of biomate
rials and lab-grown tissues.\n\nContact: Balbi\, Valentina\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/99/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Sairam Pamulaparthi Venkata (PhD defense) (University of Galway)
DTSTART:20240618T090000Z
DTEND:20240618T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/100
DESCRIPTION:Title: Designing instabilities in inhomogeneous soft auxetic structure
s\nby Sairam Pamulaparthi Venkata (PhD defense) (University of Galway)
as part of Maths seminars at the University of Galway\n\nLecture held in
ADB1020.\n\nAbstract\nAuxetics\, also known as negative Poisson’s ratio
materials\, exhibit expansion (or contraction) in all directions when str
etched (or compressed)\, unlike conventional materials. This unique charac
teristic finds applications in various fields such as bioprosthetics\, ene
rgy harvesting\, flexible electronics\, and sports helmets. Our study inve
stigates the finite strain deformation behaviour of auxetic structures und
er different loads\, revealing complex surface patterns due to tailored di
stribution of material properties\, essential for their practical applicat
ions.\n\nAs a proof of concept\, we investigate the wrinkling behaviour of
functionally- graded or inhomogeneous auxetic structures under various lo
ading conditions. This includes (a) studying the wrinkling of thin and sof
t functionally-graded auxetic membranes under in-plane tensile loads\, (b)
designing instabilities in inflated circular and square auxetic membranes
under uniform pressure loading\, and (c) investigating the wrinkling inst
ability of 3D isotropic auxetic bilayer systems under tension.\n\nIn summa
ry\, we demonstrate that by tailoring the spatial inhomogeneities of the Y
oung modulus and Poisson ratio along with the direction of loading\, we ca
n produce non-trivial wrinkling patterns at targeted locations in auxetic
structures.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/100/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Oleksandra Gasanova (University of Duisburg-Essen)
DTSTART:20241010T140000Z
DTEND:20241010T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/101
DESCRIPTION:Title: Periodic lozenge tilings of the plane\nby Oleksandra Gasano
va (University of Duisburg-Essen) as part of Maths seminars at the Univer
sity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nWe start with the
tiling of the plane by equilateral triangles. Their vertices form a lattic
e which we will call L0. By merging two adjacent triangles of this tiling
we obtain a rhombus\, also known as a lozenge. It is clear that there exis
t 3 different orientations of them\, and that the plane can be tiled with
lozenges. Now let L1 be a cofinite sublattice of L0. We are interested in
lozenge tilings of the plane which are invariant under the translation by
any element in L1. Since L0/L1 is finite\, we are using only finitely many
lozenges in our tiling (mod L1). To each L1-periodic tiling one can attac
h a vector (called the type of the tiling) storing the information about t
he number of lozenges of each orientation used in the tiling (mod L1). Thi
s way we can split all the L1-periodic tilings into groups of different ty
pes.\n\n\n\nThe main focus of the talk is to address the following questio
ns:\n\n\n\n1) For a given cofinite sublattice L1 of L0\, which types of L1
-periodic tilings exist?\n\n2) For a given type\, can we list all the L1-p
eriodic tilings of this type?\n\n \n\nContact: Emil Skoldberg\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/101/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Leonard Henckel (University College Dublin)
DTSTART:20240913T140000Z
DTEND:20240913T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/102
DESCRIPTION:Title: Graphical tools for selecting conditional instrumental sets
\nby Leonard Henckel (University College Dublin) as part of Maths seminars
at the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIns
trumental variables are an important tool for estimating causal effects in
the presence of unmeasured confounding. However\, it is also well-known t
hat instrumental variable estimators tend to be inaccurate. In response we
consider the problem of how to graphically characterize conditional instr
umental sets that are valid and also efficient in linear structural equati
on models compatible with a known acyclic directed mixed graph. We first c
haracterize the class of all valid conditional instrumental sets for the t
arget total effect and provide a graphical criterion that\, for certain pa
irs of valid conditional instrumental sets\, identifies which of the two c
orresponding estimators has the smaller asymptotic variance. We then use t
hese two results to characterize a valid conditional instrumental set for
which the corresponding estimator has the smallest asymptotic variance tha
t can be ensured with a graphical criterion. \n\nContact: Nicola Fitz-Simo
n\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/102/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Alberto Paccanaro (Royal Holloway University of London & FGV)
DTSTART:20241017T140000Z
DTEND:20241017T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/103
DESCRIPTION:Title: Machine learning algorithms for predicting disease genes\, drug
side effects and novel enzymes\nby Alberto Paccanaro (Royal Holloway
University of London & FGV) as part of Maths seminars at the University o
f Galway\n\nLecture held in ADB1020.\n\nAbstract\nI will begin by presenti
ng a method that we developed to quantify a distance between disease modul
es on the human protein interaction network that uses only disease phenoty
pe information (that is\, roughly speaking\, the description of the diseas
e). I will show how this measure can be exploited by a learning algorithm
that uses ideas from network medicine for inferring disease genes for heri
table diseases. Importantly\, our method is the first that can be applied
also to diseases for which no disease gene is already known. \n\nI will t
hen describe a machine learning approach that we developed for the predict
ion of drug side effects. This algorithm\, which is based on matrix factor
ization\, is the first that can predict the frequency of drug side effects
in the population. The algorithm learns embeddings for drugs and side eff
ects as vectors in a low dimensional space and I will show that these repr
esentations can be interpreted\, leading to explanations for the predictio
ns that may shed some light on the underlying biological processes.\n\nFin
ally\, I will present a recent work in which we have applied deep learning
transformer-based models to learn complex distributions of sequences of a
mino acids – this is similar to how Large Language Models model the dist
ribution of word sequences in the context of Natural Language Processing.
In particular\, I will show how we fine-tuned these models to specific fam
ilies of enzymes and how we can generate enzymes that have virtually the s
ame structure of natural enzymes\, but whose amino-acid composition is ver
y different. These new enzymes\, while retaining the enzymatic function of
their natural counterparts\, could have different physical-chemical prope
rties\, thus enabling us to use them in industrial processes where it woul
d be unfeasible to use the natural enzymes (joint work with Prof Giorgio V
alentini Lab at the University of Milan).\n\n \n\nShort Bio: Alberto Pacca
naro is Professor in the Department of Computer Science at Royal Holloway\
, University of London and in the School of Applied Mathematics (EMAp) at
FGV in Rio de Janeiro. He completed his undergraduate studies in Computer
Science at the University of Milan and received his PhD from the Universit
y of Toronto in 2002\, specializing in machine learning under the supervis
ion of Geoffrey Hinton. From 2002 to 2006\, he was a postdoc in Mansoor Sa
qi’s lab at Queen Mary University of London and in Mark Gerstein’s lab
at Yale University. In 2006\, he joined Royal Holloway University of Lond
on and started his own lab (www.paccanarolab.org). He has been visiting pr
ofessor at Cornell\, Yale\, the University of Venice and the Catholic Univ
ersity of Asuncion in Paraguay. He is responsible for several internationa
l collaborations and co-directs research grants together with academics at
Yale\, Cornell and the Liverpool School of Tropical Medicine. Alberto’s
work focuses on developing machine learning algorithms to address complex
problems in molecular biology\, medicine\, and pharmacology. He is partic
ularly interested in the integration of AI with systems biology and its po
tential to transform healthcare and drug discovery.\n\n \n\nContact: Haixu
an Yang\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/103/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Doug Speed (Arhus University)
DTSTART:20240912T140000Z
DTEND:20240912T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/104
DESCRIPTION:Title: New tools for analyzing genome-wide association study data\
nby Doug Speed (Arhus University) as part of Maths seminars at the Univer
sity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nI will describe so
me statistical tools for analyzing GWAS data\, implemented within my softw
are package LDAK (www.dougspeed.com). These include tools for mixed-model
association testing (used to detect variants associated with a trait) and
for constructing polygenic risk scores (used to create genetic prediction
models of diseases).\n\nContact: Cathal Seoighe\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/104/
END:VEVENT
BEGIN:VEVENT
SUMMARY:James Cruickshank (University of Galway)
DTSTART:20241003T140000Z
DTEND:20241003T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/105
DESCRIPTION:Title: Combinatorial geometric constraint systems\nby James Cruick
shank (University of Galway) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nI will talk about some
problems that I worked on during my recent sabbatical. The common theme is
the presence of a hypergraph together with some system of polynomial equa
tions that is parameterised by the hypergraph. Such systems arise naturall
y in applied discrete geometry\, and also in algebraic combinatorics\, alg
ebraic statistics and many other areas. The tools of rigidity theory can p
rovide interesting geometric and combinatorial information about these com
binatorial geometric constraint systems. I will not assume that you have a
ny prior knowledge of the topics.\n\n \n\nContact: Haixuan Yang\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/105/
END:VEVENT
BEGIN:VEVENT
SUMMARY:David Malone (Maynooth University)
DTSTART:20241031T150000Z
DTEND:20241031T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/106
DESCRIPTION:Title: Why is it Thursday\, October 31st 2024\, 15:00:00 UTC?\nby
David Malone (Maynooth University) as part of Maths seminars at the Unive
rsity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nAbstract: There a
re lots of profound questions about time arising from physics\, philosophy
and psychology. This talk doesn't answer any of them. Instead we're going
to answer the question "What time is it and why?" and see why we have yea
rs\, months\, days and seconds. To get to the answer we'll have to meet th
e stars\, Roman emperors\, a Pope\, a judge\, and some people who did thei
r measurements too carefully.\n\n\n\n\n\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/106/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Richard Aron (Kent State University)
DTSTART:20241015T140000Z
DTEND:20241015T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/107
DESCRIPTION:Title: Norm attainment and isometries\nby Richard Aron (Kent State
University) as part of Maths seminars at the University of Galway\n\nLec
ture held in ADB1020.\n\nAbstract\nWe investigate instances of when isomet
ries between Banach spaces do not preserve norm-attaining points. We will
discuss this in light of recent work with Jose Bonet and Manuel Maestre\,
and we will review older work on Lipschitz functions by Miguel Martin\, Vl
adimir Kadets\, and Mariia (sic) Soloviova.\n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/107/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Niall Madden (University of Galway)
DTSTART:20241114T150000Z
DTEND:20241114T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/108
DESCRIPTION:Title: An enriched finite element space for boundary layer problems\nby Niall Madden (University of Galway) as part of Maths seminars at the
University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nAbstract:
The numerical solution of singularly perturbed PDEs is both interesting an
d challenging. In this talk\, I'll first give a general introduction to th
ese problems\, and some of the numerous attempts to construct specialised
numerical schemes that take into account the presence of any layers in the
solutions. In the second part of the talk\, I'll present a fitted operato
r-type approach\, where we incorporate information on boundary layers into
an otherwise standard finite element method. We'll also give some thought
to the stability of the scheme\, and the development of fast solvers.\n\n
This is joint work with Kirk Soodhalter and Adam Byrne (TCD).\n\n \n\nCont
act: Haixuan Yang\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/108/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Stephen Watson (York University)
DTSTART:20241205T150000Z
DTEND:20241205T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/109
DESCRIPTION:Title: How to Describe all Semiorders\nby Stephen Watson (York Uni
versity) as part of Maths seminars at the University of Galway\n\nLecture
held in ADB1020.\n\nAbstract\nA semiorder is a kind of partial order in w
hich incomparability need not be transitive. Semiorders have become much u
sed in mathematical economics and mathematical psychology\, particularly i
n modeling preferences. We will show that semiorders are exactly subsets o
f modified lexicographic products of three total preorders in which the mi
ddle factor is the integers equipped with a shift operator\, and that this
has several surprising consequences.\n\n \n\nContact: Aisling McCluskey\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/109/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Colin Semple (University of Edinburgh)
DTSTART:20241129T150000Z
DTEND:20241129T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/111
DESCRIPTION:Title: Genomic instability and mitochondrial dysfunction drive high gr
ade serous ovarian cancer\nby Colin Semple (University of Edinburgh) a
s part of Maths seminars at the University of Galway\n\nLecture held in A
DB1020.\n\nAbstract\nDeciphering the complex somatic variation present in
tumour genomes is crucial to determine the events that drive tumour progre
ssion and fully understand the evolution of tumours. High grade serous ova
rian cancer (HGSOC) is often considered an archetypal example of a tumour
type that is driven by frequent structural variants and genomic instabilit
y\, while the roles of somatic mtDNA variants in this tumour type are poor
ly studied. We have comprehensively studied the mutational landscape drivi
ng HGSOC\, exploiting a large (N=324)\, deeply whole genome sequenced data
set. We show that the genomic chaos seen in these tumours obscures meaning
ful underlying patterns\, namely two divergent evolutionary trajectories\,
affecting patient survival and causing different genomic aberrations. One
involves homologous recombination repair deficiency (HRD) while the other
is dominated by whole genome duplication (WGD) with frequent chromothrips
is and breakage-fusion-bridges. Remarkably\, these heavily disrupted nucle
ar genomes are also frequently accompanied by alterations to the mitochond
rial genome\, impacting patient survival. The magnitude of the impact on s
urvival is directly related to the types and frequencies of the mtDNA vari
ants involved. There is also evidence that mtDNA mutation loads interact w
ith some structural alterations in the nuclear genome to affect survival.
These new layers of driver mutations\, mediated by genomic instability and
mitochondrial dysfunction\, suggests new directions for research into tum
our biology and potential therapeutic targets.\n\nContact: Cathal Seoighe\
n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/111/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Seungjai Lee (Incheon National University)
DTSTART:20250130T150000Z
DTEND:20250130T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/113
DESCRIPTION:Title: Zeta functions of Lie algebras over finite fields\nby Seung
jai Lee (Incheon National University) as part of Maths seminars at the Un
iversity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this talk\,
we study zeta functions enumerating subalgebras and ideals of Lie algebra
s over finite fields. First\, I will outline a general framework for compu
ting these zeta functions\, followed by the derivation of explicit formula
s for new examples. Then\, by comparing these new computations with known
results\, we discuss their implications for the broader theory of zeta fun
ctions of Lie algebras over commutative rings.\n\nContact: Joshua Maglione
\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/113/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bartosz Wcislo (University of Gdansk)
DTSTART:20250206T150000Z
DTEND:20250206T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/115
DESCRIPTION:Title: Truth values and semantic paradoxes\nby Bartosz Wcislo (Uni
versity of Gdansk) as part of Maths seminars at the University of Galway\
n\nLecture held in MY129.\n\nAbstract\nClassical logic operates with two t
ruth values: true and false\, every sentence falling into one of these two
categories. In his seminal work\, Łukasiewicz investigated logics with a
dditional truth values\, most importantly allowing formally a sentence to
be "indetereminate": neither really true nor really false. \nOne of the ar
eas influenced by the development of the multi-valued logics is the study
of semantic paradoxes. The most famous of these is probably Liar's Paradox
: it seems that there is no consistent way in ascribing a classical truth
value to the sentence "This sentence is false." The development of logic h
as significantly narrowed the scope of possible solutions to this paradox
and we currently much better understand their ramifications. One of these
solutions is to embrace one of the nonclassical logics and to deny that Li
ar's Sentence is either true or false. In our talk\, we will present certa
in variants of this approach and formal and philosophical challenges it fa
ces. \n\nBIO: Bartosz Wcisło is a logician whose main area of research is
metamathematics of foundational theories\, models of arithmetic\, and\, m
ore recently\, inner models of set theory. His main interest lies in apply
ing formal tools to topics of philosophical significance. Currently he is
an assistant professor at the University of Gdańsk.\nHe has defended his
PhD thesis "Understanding the strength of compositional truth" in 2018 at
the University of Warsaw. Its main topic was to understand which axiomatic
truth theories are conservative over Peano Arithmetic. Loosely speaking\,
the goal was to isolate assumptions about the truth predicate which allow
us to draw new conclusions about mathematical facts. He has been explorin
g this topic for several more years. The research programme has been named
"Tarski Boundary" by Ali Enayat. More recently\, he became interested in
models of detereminacy and exploring absoluteness phenomena in set theory.
\n\nCoffee/tea/cakes/biscuits will be served after the lecture (about 4.10
pm). The venue for Coffee/tea is changed from outside ADB1019 to in ADB10
20. \n\nPlease Register at https://shorturl.at/GNWWP\n\nContact: Michael M
cGettrick\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/115/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Christopher Voll (Bielefeld University)
DTSTART:20250213T150000Z
DTEND:20250213T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/116
DESCRIPTION:Title: Combinatorial aspects of lattice enumeration\nby Christophe
r Voll (Bielefeld University) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn my talk I would lik
e to show you some beautiful combinatorial\nstructures that come up very n
aturally when one thinks about the\nenumeration of sublattices of the stan
dard lattice Z^n\, the free\nabelian group of rank n.\n\nAll the structure
s I will talk about come from\nHall--Littlewood--Schubert series\, introdu
ced in recent work with Josh\nMaglione. As their name suggests\, they are
related to the classical\nHall--Littlewood polynomials from the theory of
symmetric functions\,\nand to the (likewise classical) Schubert varieties
from algebraic\ngeometry.\n\nBy means of various substitutions\, Hall--Lit
tlewood--Schubert series\nhelp us\, on the one hand\, solve a variety of k
nown\, seemingly disjoint\ncounting problems\, including the computations
of Hecke series of\nsymplectic groups\, quiver representation zeta functio
ns\, and Hilbert\nseries of Stanley--Reisner rings. Yet other substitution
s\, however\,\nindicate intriguing non-negativity phenomena pointing to ye
t more\ngeneral structures in combinatorial algebra.\n\nNo prior knowledge
of any of the names dropped in this abstract should\nbe necessary to enjo
y this talk. Prior exposure to HLS series is\nneither a prerequisite for u
nderstanding nor a guarantee for boredom.\n\nContact: Joshua Maglione\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/116/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Helena Smigoc (UCD)
DTSTART:20250227T150000Z
DTEND:20250227T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/118
DESCRIPTION:Title: Spectral arbitrariness for trees fails spectacularly\nby He
lena Smigoc (UCD) as part of Maths seminars at the University of Galway\n
\nLecture held in ADB1020.\n\nAbstract\nThe inverse eigenvalue problem of
a graph G is the problem of characterising all lists of eigenvalues of rea
l symmetric matrices whose off-diagonal pattern is prescribed by the adjac
encies of G. The considerable literature on this problem over the past few
decades traces its roots to the less difficult (but still important) spec
ial case where G is a path\, for which the full problem was resolved in 19
74 by Hochstadt. For the path on n vertices\, any numerically ordered list
of n distinct real eigenvalues can be the ordered spectrum of a matrix wh
ose pattern corresponds to a path. In particular\, we say that the ordered
multiplicity list of n singletons is spectrally arbitrary for the path on
n vertices.\n\nFor a general graph G\, spectral arbitrariness means that
the particular numerical values of the various singleton or multiple eigen
values can be chosen arbitrarily\, with only the constraint that they occu
r in the proper order. It has sometimes been tempting to expect\, especial
ly in the case that G is a tree\, that any spacing of the multiple eigenva
lues should be realisable. Barioli and Fallat produced the first counterex
ample: a tree on 16 vertices and an ordered multiplicity list for which ev
ery realising set of eigenvalues obeys a nontrivial linear constraint.\n\n
Using combinatorial methods\, we identify a family of graphs and multiplic
ity lists whose realisable spectra are highly restricted. In particular\,
we construct trees with multiplicity lists that require a unique spectrum\
, up to shifting and scaling. This represents the most extreme possible fa
ilure of spectral arbitrariness for a multiplicity list\, and greatly exte
nds all previously known instances of this phenomenon\, in which only sing
le linear constraints on the eigenvalues were observed. \n\nContact: Rache
l Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/118/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrew Simpkin (University of Galway)
DTSTART:20250220T150000Z
DTEND:20250220T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/119
DESCRIPTION:Title: Functional data analysis\, genomics and learning English\nb
y Andrew Simpkin (University of Galway) as part of Maths seminars at the
University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nFunctional d
ata analysis is the study of data that can be represented as functions (e.
g. curves and surfaces). Treating data in this way gives rise to extended
versions of common statistical approaches such as functional linear models
\, functional mixed models\, and functional principal components analysis.
In this talk I will provide a background to some of these methods. Applic
ations in longitudinal biomarker and omics data will be presented from col
laborative work in Bordeaux. I'll then discuss a statistical learning mode
l which I developed during a visit to Rennes. The application here was in
language learning\, where features of a student's text give clues to their
competency.\n\nContact: Nastaran Sharifian\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/119/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mohsen Daman (University of Galway)
DTSTART:20250312T140000Z
DTEND:20250312T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/120
DESCRIPTION:Title: (PhD Viva) The Mechanics of Biological Growth: A Study Through
The Vertex Model\nby Mohsen Daman (University of Galway) as part of Ma
ths seminars at the University of Galway\n\nLecture held in ADB1020.\n\nA
bstract\nContact: Martin Meere\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/120/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Peter Phelan (University of Galway)
DTSTART:20250314T093000Z
DTEND:20250314T103000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/121
DESCRIPTION:Title: (PhD Viva) DGA Structures on Minimal Free Resolutions of Binomi
al Edge Ideals\nby Peter Phelan (University of Galway) as part of Math
s seminars at the University of Galway\n\nLecture held in ADB1020.\nAbstr
act: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/121/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Mackey (University College Dublin)
DTSTART:20250403T140000Z
DTEND:20250403T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/122
DESCRIPTION:Title: Fixed points of spin factor automorphisms\nby Michael
Mackey (University College Dublin) as part of Maths seminars at the Unive
rsity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nA classic result
of Hayden and Suffridge provides that a biholomorphic automorphism of the
open unit ball of a Hilbert space has a fixed point when extended to the c
losed ball. We will introduce spin\nfactors\, also known as the Cartan fa
ctors of type IV\, which form a key test space in the generalisation of th
is result. We will explain why the approach used for Hilbert space fails
and present some conditions which guarantee that an automorphism of the un
it ball of a spin factor has a fixed point.\n\nThis is joint work with Pau
line Mellon.\n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/122/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Colm Mulcahy (Spelman College\, Georgia and South East Technologic
al University\, Waterford)
DTSTART:20250417T140000Z
DTEND:20250417T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/123
DESCRIPTION:Title: From One\, Two\, Many\, to ABC (or ten reasons why mathematics
isn't as easy as 1\,2\,3)\nby Colm Mulcahy (Spelman College\, Georgia
and South East Technological University\, Waterford) as part of Maths semi
nars at the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\
nAre there really primitive tribes whose system of counting goes: “One\,
Two\, Many\,. . .” indicating that from three on it’s a blur? It’s
surprising how little progress we’ve made in addressing some basic probl
ems in 3D or beyond\, or when solving seemingly simple equations in ≥ 3
variables.\n\n\nWe’ll survey ten fun topics in shapes and numbers and pa
tterns whose basics and generalisations can be explored with little mathem
atical background\, and which speedily lead to “what if?” questions ra
nging from easy to tricky to “we just don’t know.”\n\n\nCakes\, doug
hnuts\, coins\, boxes\, cubes\, primes\, squares\, and sums involving powe
rs will all make appearances. Occasionally\, we will stray into deeper wa
ters and touch on more sophisticated topics.\n\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/123/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Joshuah Heath (Nordita Sweden)
DTSTART:20250605T140000Z
DTEND:20250605T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/124
DESCRIPTION:Title: Entanglement spectrum of matchgate circuits with universal and
non-universal resources\nby Joshuah Heath (Nordita Sweden) as part of
Maths seminars at the University of Galway\n\nLecture held in ADB1020.\n\
nAbstract\nThe entanglement level statistics of a quantum state have recen
tly been proposed to be a signature of universality in the underlying quan
tum circuit. This is a consequence of level repulsion in the entanglement
spectra being tied to the integrability of entanglement generated. In this
talk\, I will outline of our recent work (Projansky\, Heath\, & Whitfield
\, Quantum 8\, 1432 (2024)) where we provide the first example of a circui
t which is composed of a simulable gate set\, yet has a Wigner-Dyson distr
ibuted entanglement level spectrum without any perturbing universal elemen
t. We first show that\, for matchgate circuits acting on random product st
ates\, Wigner-Dyson statistics emerge by virtue of a single SWAP gate\, in
direct analog to previous studies on Clifford circuits. However\, by stud
ying Clifford and matchgate hybrid circuits\, we find examples of classica
lly simulable circuits whose output states exhibit Wigner-Dyson entangleme
nt level statistics in the absence of universal quantum gate elements. Our
study thus provides strong evidence that the entanglement spectrum is not
strongly connected to notions of simulability in any given quantum circui
t.\n\nContact: Mark Howard\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/124/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrea Fontanella (TCD)
DTSTART:20250529T140000Z
DTEND:20250529T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/125
DESCRIPTION:Title: Stepping into the Quantum Universe: Black Holes and Holography<
/a>\nby Andrea Fontanella (TCD) as part of Maths seminars at the Universi
ty of Galway\n\nLecture held in ADB1020.\n\nAbstract\nTheoretical high-ene
rgy physics is a rich and challenging field\, with many fundamental questi
ons still unresolved. One of the most profound is the formulation of a con
sistent theory of quantum gravity. I will begin by reviewing this problem
and explore how the holographic principle—a duality between gravitationa
l and non-gravitational theories—offers a potential solution. However\,
the current formulation of holography relies on spacetimes with negative c
urvature\, something that we do not experience in our Universe. I will the
n discuss recent developments aimed at extending holography beyond this se
tting\, and on how non-Lorentzian limits play a crucial role in these effo
rts. \n\nContact: Michael McGettrick\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/125/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Florian Schreier-Aigner (University of Vienna)
DTSTART:20250514T090000Z
DTEND:20250514T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/126
DESCRIPTION:Title: Growth diagram proofs for the Littlewood identities\nby Flo
rian Schreier-Aigner (University of Vienna) as part of Maths seminars at t
he University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThe (dua
l) Cauchy identity has an easy algebraic proof utilising a commutation rel
ation between the up and (dual) down operators. By using Fomin's growth di
agrams\, a bijective proof of the commutation relation can be "bijectivise
d" to obtain RSK like correspondences. In this talk I will introduce this
machinery and extend it to Littlewood type identities by introducing a new
family of relations between these operators\, called projection identitie
s.\n\nContact: Joshua Maglione\n\nCoffee/Tea will be available at 9.30.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/126/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Khaled Alzobydi (University of Galway)
DTSTART:20250513T090000Z
DTEND:20250513T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/127
DESCRIPTION:Title: (PhD Viva) Cellular Approximations to the diagonal map\nby
Khaled Alzobydi (University of Galway) as part of Maths seminars at the U
niversity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThis will be
a 30-minute talk about the speaker's PhD work on cellular approximations t
o the diagonal map in which he develops an implemented algorithm for calcu
lating cup products in the cohomology of finite regular CW complexes.\n\nC
ontact: Graham Ellis\n\nCoffee/tea will be served after the talk\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/127/
END:VEVENT
BEGIN:VEVENT
SUMMARY:TBD (TBD)
DTSTART:20250512T140000Z
DTEND:20250512T153000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/128
DESCRIPTION:Title: The International Day of Women in Mathematics\nby TBD (TBD)
as part of Maths seminars at the University of Galway\n\nLecture held in
Hardiman Research Building exhibition space\; THB-G010\; AC201.\n\nAbstra
ct\nMay 12 is the International Day of Women in Mathematics\, marked by ev
ents around the world to celebrate the mathematical achievements of women.
\n\nEveryone is welcome to the following events\, hosted by the School of
Mathematical and Statistical Sciences.\n\nMonday 3.00: Opening of the por
trait exhibition "Women of Mathematics from around the World" in the Hardi
man Research Building exhibition space (with light refreshments). The exhi
bition will remain in place until May 23 and will also feature some releva
nt items from the University of Galway special collections. \n\n\nMonday 3
.30: Screening of "Secrets of the Surface: the Mathematical Vision of Mary
am Mirzakhani" in Room THB-G010.\n\nRuntime is one hour.\n\nOn the same da
y\, the School will host a one-day conference\, the RIA-ICEDIM Women in th
e Mathematical Sciences Day in AC201.\n\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/128/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Francesca Ballatore (Laboratoire J. A. Dieudonn´e\, Universit´e
Cˆote d’Azur\, Nice\, France)
DTSTART:20250610T130000Z
DTEND:20250610T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/129
DESCRIPTION:Title: Modelling brain tumour progression and cerebral ventricle defo
rmation through a patient-specific mechanical framework\nby Francesca
Ballatore (Laboratoire J. A. Dieudonn´e\, Universit´e Cˆote d’Azur\,
Nice\, France) as part of Maths seminars at the University of Galway\n\nL
ecture held in ADB1020.\n\nAbstract\nBrain tumours pose significant medica
l challenges due to their unpredictable location and varying degrees of ma
lignancy. Malignant brain tumours\, in particular\, are known for their ag
gressive behaviour\, presenting obstacles to effective treatment. The grow
th of a brain tumour can result in a mass effect\, causing compression and
displacement of surrounding healthy brain tissue. This can lead to change
s in ventricle volume\, resulting in increased intracranial pressure and p
otentially severe neurological complications [1]. Additionally\, adjacent
healthy areas may also be compressed\, further compromising their normal f
unction and contributing to the overall impact of the tumour. The current
standard of care for brain tumours involves surgical resection as the prim
ary treatment\, followed by radiation therapy and chemotherapy\, whenever
feasible [2]. In this study\, we propose a multiphase mechanical model for
brain tumour growth that quantifies deformations and solid stresses cause
d by the expanding tumour mass. Our model considers the influence of brain
fibres on the tumour’s anisotropic growth patterns\, accounting for the
irregular and heterogeneous nature of brain tumours. To construct realist
ic three-dimensional brain geometries and capture the shape of the ventric
les\, we incorporate patient-specific MRI and DTI data. By investigating t
he intricate interactions between brain tumours and the surrounding brain
tissue\, our model yields valuable insights into the extent of ventricular
compression caused by tumour growth. Additionally\, it elucidates the tum
our’s impact on adjacent healthy brain areas. The numerical results obta
ined using the software FEniCS show the model’s effectiveness in capturi
ng the complex dynamics of brain tumour growth and its mechanical impact o
n surrounding brain tissue. This work contributes to advancing our underst
anding of tumour progression and has the potential to guide the developmen
t of targeted therapies tailored to individual patients.\n\n \n\nReference
s:\n\n[1] A. Ahmed\, M. U. UlHaq\, Z. Mustansar\, A. Shaukat\, and L. Marg
etts\, How growing tumour impacts intracranial pressure and deformation me
chanics of brain. Royal Society Open Science (2021)\, pp. 210165.\n\n[2] R
. Stupp et al.\, Radiotherapy plus Concomitant and Adjuvant Temozolomide f
or Glioblastoma. New England Journal of Medicine (2005)\, pp. 987–996.\n
\nContact: Valentina Balbi for the Stokes workshop\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/129/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mario Falciatore (University of Galway)
DTSTART:20250611T130000Z
DTEND:20250611T140000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/130
DESCRIPTION:Title: Zeta Functions: from Arithmetic to Analysis\nby Mario Falci
atore (University of Galway) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nZeta functions appear i
n many areas of Mathematics\, including Number Theory\, Geometry and Mathe
matical Physics. The most famous example is the Riemann zeta function\, wh
ich was originally defined as a simple infinite series yet is deeply conne
cted to the distribution of prime numbers due to the remarkable arithmetic
information it encodes. In this talk\, we will explore what zeta function
s are\, why they are interesting and how they arise naturally in Mathemati
cs. We will examine how they transform arithmetic properties into analytic
entities and explore the surprising connections this perspective establis
hes between various branches of Mathematics.\n\nFor this talk no prior kno
wledge of Complex Analysis or Number Theory will be assumed — just curio
sity!\n\nContact: Valentina Balbi for the Stokes workshop\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/130/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Karim Adiprasito (IMJ-Paris Rive Gauche)
DTSTART:20251002T140000Z
DTEND:20251002T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/131
DESCRIPTION:Title: The Hard Lefschetz property\nby Karim Adiprasito (IMJ-Paris
Rive Gauche) as part of Maths seminars at the University of Galway\n\nLe
cture held in ADB1020.\n\nAbstract\nWe discuss a property originating in a
lgebraic geometry\, the Hard Lefschetz property\, how it is proven and giv
e connections to graphs\, polytopes and spheres.\n\nContact: James Cruicks
hank\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/131/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Erin Evelyn Gabriel (the University of Copenhagen)
DTSTART:20251030T150000Z
DTEND:20251030T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/132
DESCRIPTION:Title: Improved small-sample inference for functions of parameters in
the k-sample multinomial problem\nby Erin Evelyn Gabriel (the Universi
ty of Copenhagen) as part of Maths seminars at the University of Galway\n
\nLecture held in ADB1020.\n\nAbstract\nWhen the target parameter for infe
rence is a real-valued\, continuous function of probabilities in the k-sam
ple multinomial problem\, variance estimation may be challenging. In small
samples or when the function is nondifferentiable at the true parameter\,
methods like the nonparametric bootstrap or delta method may perform poor
ly. We develop an exact inference method that applies to this general situ
ation. We prove that our proposed exact p-value correctly bounds the type
I error rate and the associated confidence intervals provide at least nomi
nal coverage\; however\, they are generally difficult to implement. Thus\,
we propose a Monte Carlo implementation to approximate the exact p-value
and confidence intervals that we show to be consistent in the number of it
erations. Our approach is general in that it applies to any real-valued co
ntinuous function of multinomial probabilities from an arbitrary number of
samples and with different numbers of categories.\n\nContact: Nicola Fitz
-Simon\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/132/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elise Lockwood (Oregon State University)
DTSTART:20250905T120000Z
DTEND:20250905T130000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/133
DESCRIPTION:Title: “Counting Is Hard” but It’s Rewarding and Fun: Insights f
rom a Research Program in Combinatorics Education\nby Elise Lockwood (
Oregon State University) as part of Maths seminars at the University of G
alway\n\nLecture held in ADB1020 - Confirmed.\n\nAbstract\nProblems in enu
merative combinatorics (or counting problems) have a reputation for being
simple to state but difficult to solve\, to the point that one undergradua
te textbook author claims that “Counting is Hard.” My research program
has focused on demystifying counting problems for undergraduate students
– both by seeking to understand the nature of counting problems and what
makes them challenging\, and by exploring how to support students in prod
uctively reasoning about and successfully solving counting problems. In th
is talk\, I provide an overview of this research program\, highlighting so
me of my favorite big ideas and specific insights about the teaching and l
earning of combinatorics. In doing so\, I discuss what I learned about com
binatorics education through research projects that focused on the multipl
ication principle\, generalization\, computational activity\, and mathemat
ical equivalence. I frame these ideas and insights within the non-linear p
ath my research has taken over the years\, noting challenges and successes
in carving out a research program in what was at the time a relatively un
der-studied area of mathematics education research.\n\nContact: Kirsten Pf
eiffer\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/133/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Flattery (University of Galway)
DTSTART:20250916T090000Z
DTEND:20250916T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/134
DESCRIPTION:Title: (PhD Viva) Generating Functions for the Casimir Invariants of S
imple Lie Algebras\nby Michael Flattery (University of Galway) as part
of Maths seminars at the University of Galway\n\nLecture held in THB-G01
1 Seminar Room - Confirmed.\n\nAbstract\nIn this talk we review the classi
fication of simple complex Lie algebras and give an overview of their repr
esentation theory including Klymik’s formula for decomposing tensor prod
ucts of irreducible representations. We review Okubo’s formula for calcu
lating the eigenvalues of general degree Casimir Operators on irreducible
representations. Using Klymik’s formula and Okubo’s formula\, we obtai
n a new formula for efficiently calculating these eigenvalues. We apply ou
r result to derive closed expressions for the generating functions of thes
e eigenvalues for the first fundamental representations of the non-excepti
onal Lie algebras.\n\nContact: Michael Tuite\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/134/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Paul Levy (Lancaster University)
DTSTART:20250917T110000Z
DTEND:20250917T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/135
DESCRIPTION:Title: Lusztig's Special Pieces Conjecture\nby Paul Levy (Lancaste
r University) as part of Maths seminars at the University of Galway\n\nLe
cture held in THB-G011 Seminar Room - Confirmed.\n\nAbstract\nIn connectio
n with the Springer correspondence\, Lusztig defined an important subset o
f the nilpotent orbits in a simple complex Lie algebra\, called the specia
l orbits. To each special orbit is associated an open subset of its closur
e\, called a special piece\; the special pieces partition the nilpotent co
ne. A long-standing conjecture of Lusztig\, open in exceptional types\, is
that each special piece is the quotient of a smooth variety by a certain
finite group H.\n\nIn this talk I will outline a proof of the conjecture.
The first step is the establishment of a "local version"\, which holds in
a suitable transverse slice. In each case\, the transverse slice is isomor
phic to the quotient of a vector space by H. The local version allows us t
o establish smoothness of a certain H-cover of the special piece\, therefo
re establishing the conjecture. Along the way\, I hope to explore some int
eresting connections with symplectic singularities\, Coulomb branches\, an
d invariant theory.\n\nThis is joint work with Fu\, Juteau\, Sommers and Y
u.\n\nContact: Michael Tuite\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/135/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ryoshun Oba (IMJ-Paris Rive Gauche)
DTSTART:20250930T110000Z
DTEND:20250930T120000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/136
DESCRIPTION:Title: From (face) rings to stresses\nby Ryoshun Oba (IMJ-Paris Ri
ve Gauche) as part of Maths seminars at the University of Galway\n\nLectu
re held in THB-G011 Seminar Room - Confirmed.\n\nAbstract\nWe explain how
the rigidity of a bar-joint framework is related to regularity properties
of commutative rings\, and what numerical and combinatorial implications t
his has for graphs\, polytopes and spheres.\n\nContact: James Cruickshank\
n\nCoffee/Tea: The speaker will join the coffee/tea session at 2.30pm Thur
sday in ADB-G022.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/136/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Brendan Guilfoyle (Munster Technological University\, Tralee)
DTSTART:20251023T140000Z
DTEND:20251023T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/137
DESCRIPTION:Title: Null hypersurfaces: from CT scans to the Critical Catenoid Conj
ecture\nby Brendan Guilfoyle (Munster Technological University\, Trale
e) as part of Maths seminars at the University of Galway\n\nLecture held
in ADB1020.\n\nAbstract\nUnderlying the mathematics governing tomography (
such as CT scans) is a certain 3-dimensional hypersurface in the space of
rays\, a hypersurface that is null with respect to the canonical neutral m
etric. This is not the only null hypersurface that could be used for this
purpose\, and others lead to different designs for scanning devices. The f
irst part of this talk will discuss the possible advantages of these alter
native designs and the null hypersurfaces behind them. \n\nWe will then t
urn to the indefinite geometry of these hypersurfaces and explain how they
could be used to prove the currently open Critical Catenoid Conjecture\,
which states that the only embedded minimal annulus in the unit ball in Eu
clidean 3-space which is orthogonal at the boundary is a catenoid. \n\nThi
s is work carried out in collaboration with Nikos Georgiou\, Wilhelm Kling
enberg and Morgan Robson.\n\nContact: James Cruickshank\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/137/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Christophe Hohlweg (Université du Québec à Montréal)
DTSTART:20251009T140000Z
DTEND:20251009T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/138
DESCRIPTION:Title: Reflections on Coxeter systems\nby Christophe Hohlweg (Univ
ersité du Québec à Montréal) as part of Maths seminars at the Univers
ity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThere are three fam
ilies of Coxeter systems: finite\, affine and indefinite. By far\, the cla
ss of indefinite Coxeter systems (containing the class of hyperbolic discr
ete reflection groups for instance)\, is the less understood by lack of al
gebraic combinatorial tools. In this talk\, I will discuss recent developm
ents of such tools and open problems involving the set of reflections of a
(indefinite) Coxeter system\, some subarrangements of its Coxeter hyperpl
ane arrangement\, and their relationship to biautomatic structures.\n\nCon
tact: Angela Carnevale\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/138/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Myrto Manolaki (UCD)
DTSTART:20250929T140000Z
DTEND:20250929T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/139
DESCRIPTION:Title: Universal composition operators and complex dynamics\nby My
rto Manolaki (UCD) as part of Maths seminars at the University of Galway\
n\nLecture held in AC204 - confirmed.\n\nAbstract\nThe investigation of co
mposition operators acting on spaces of analytic functions has been an act
ive branch of operator theory since the pioneering work of Nordgren and Ka
mowitz. This talk is concerned with the study of composition operators und
er the framework of universality. As we will see\, this provides interesti
ng connections between the fields of linear dynamics and complex dynamics.
(Based on joint work with Vasiliki Evdoridou and Cliff Gilmore)\n\nContat
c: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/139/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrew Smith (University College Dublin)
DTSTART:20251106T150000Z
DTEND:20251106T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/140
DESCRIPTION:Title: Fractals and Continuous-Time Gambling\nby Andrew Smith (Uni
versity College Dublin) as part of Maths seminars at the University of Ga
lway\n\nLecture held in THB-G011 Seminar Room - Confirmed.\n\nAbstract\nBr
ownian Blancmange is a fractal curve that bears some resemblance to financ
ial prices. It satisfies the same calculus as continuous-time Brownian mot
ion but the construction is elementary. I will show how to construct Brown
ian Blancmange and perform calculus on it.\n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/140/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cliff Gilmore
DTSTART:20250416T140000Z
DTEND:20250416T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/141
DESCRIPTION:Title: Contact: Nina\nby Cliff Gilmore as part of Maths seminars a
t the University of Galway\n\nLecture held in ADB1020.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/141/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cliff Gilmore (UNIVERSIT E CLERMONT AUVERGNE)
DTSTART:20260416T140000Z
DTEND:20260416T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/142
DESCRIPTION:Title: TYPICALITY OF OPERATORS ADMITTING A HYPERCYCLIC ALGEBRA\nby
Cliff Gilmore (UNIVERSIT E CLERMONT AUVERGNE) as part of Maths seminars a
t the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThis
talk is concerned with the study of typical properties (in the Baire categ
ory\nsense) of particular classes of continuous linear operators acting on
Fr´echet alge-\nbras. The investigation of the typicality of operators p
ossessing particular linear\ndynamical properties was initiated in the mon
ograph by Grivaux\, Matheron and\nMenet [3].\nI will begin by introducing
the setting of closed balls BM (X) of bounded linear\noperators T : X →X
with ∥T ∥≤M \, for M > 0. Here X denotes the complex\nFr´echet alg
ebras X= ℓp(N)\, 1 ≤p < +∞\, or X= c0(N). When endowed with\nthe top
ology of pointwise convergence\, i.e. the Strong Operator Topology (SOT)\,
the\nspace (BM (X)\, SOT) is Polish\, which allows us to employ Baire cat
etory techniques.\n\nWe say that a property of elements of X is typical if
the set of all x ∈X that\npossesses the property is comeagre in X.\nDur
ing the talk\, I will recall some pertinent results from the area of hyper
cyclic\nalgebras that will be of use\, in particular a criterion from Baya
rt\, Costa J´unior and\nPapathanasiou [2]. To conclude\, I will give an i
dea of the proof of the following\nresult: whenever M > 1\, a typical oper
ator in (BM (X)\, SOT) admits a hypercyclic\nalgebra.\n\nThis talk is base
d on joint work with W. Alexandre and S. Grivaux [1].\n\nReferences\n\n[1]
W. Alexandre\, C. Gilmore\, and S. Grivaux. Typicality of operators on Fr
´echet algebras\nadmitting a hypercyclic algebra. Adv. Math.\, 478:Paper
No. 110406\, 2025.\n[2] F. Bayart\, F. Costa J´unior\, D. Papathanasiou\,
Dimitris Baire theorem and hypercyclic alge-\nbras\, Adv. Math. 376:Paper
No. 107419\, 2021.\n[3] S. Grivaux\, E. Matheron\, Q. Menet\, Linear Dyna
mical Systems on Hilbert Spaces: Typical\nProperties and Explicit Examples
\, Mem. Amer. Math. Soc. 269\, 2021.\n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/142/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michael Zurel (Simon Fraser University)
DTSTART:20251113T150000Z
DTEND:20251113T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/143
DESCRIPTION:Title: Efficient classical simulation of some quantum computations
\nby Michael Zurel (Simon Fraser University) as part of Maths seminars at
the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThe pro
mise of quantum computers is to be able to solve some computational proble
ms beyond the reach of any classical computer. But the source of this quan
tum computational advantage remains unclear. One way to approach the probl
em of characterizing this quantum advantage is to determine families of qu
antum computations that can be efficiently simulated by a classical comput
er. If a family of quantum computations admits an efficient classical simu
lation algorithm\, then it offers no possibility of a quantum computationa
l advantage\, and so we conclude that some resource outside the scope of t
his family is necessary for a quantum advantage. Often the failure of effi
cient classical simulation of quantum computations coincides with traditio
nal notions of nonclassical behaviour in physical systems\, like quantum e
ntanglement\, contextuality\, and negative values in the Wigner function.
I will show that quantum computations on states with nonnegative Wigner fu
nctions can be efficiently simulated classically\, and that using related
classical simulation algorithms\, we can efficiently simulate quantum comp
utations on some states with negative Wigner function values.\n\nContact:
Mark Howard\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/143/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jesse Lansdown (University of Galway)
DTSTART:20251016T140000Z
DTEND:20251016T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/144
DESCRIPTION:Title: Applications of association schemes via Delsarte theory\nby
Jesse Lansdown (University of Galway) as part of Maths seminars at the U
niversity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nAn associatio
n scheme is a collection of highly regular relations. They arise naturally
in many settings and generalise both distance regular graphs and groups.
Many interesting combinatorial objects\, such as designs\, codes\, cliques
\, and EKR-sets\, can be embedded into an association scheme. Perhaps more
surprisingly\, these objects can often be described by the eigenspaces of
the association scheme - in which case they are called Delsarte designs.
In this talk I will give an introduction to both association schemes and D
elsarte theory\, with examples and applications\, and also detail some of
my own contributions.\n\nContact: HY\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/144/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lasse Bjørn Kristensen (University of Copenhagen)
DTSTART:20251211T150000Z
DTEND:20251211T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/145
DESCRIPTION:Title: All I want for Christmas is ground states\nby Lasse Bjørn
Kristensen (University of Copenhagen) as part of Maths seminars at the Un
iversity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThe analysis o
f molecules is one of the most promising potential applications of future
quantum computers. However\, quantum state spaces are huge\, and finding t
he relevant low-energy states of a given molecular system is a difficult p
roblem—possibly even in the complexity theoretic sense. In this talk\, I
will give a brief introduction to the field of quantum computing for chem
istry\, and the related problem of state preparation. I will then explain
some of my own recent work in this field\, focusing especially on how to u
se data-driven methods to make the problem easier\, and on how to use phys
ics-inspired cooling-approaches to try to circumvent the hardness. In this
way\, I’ll hopefully convince you that cleverness may yet prevail in th
e face of difficulty—and hopefully without the need for too many Christm
as miracles. \nReferences: \n- The generative quantum eigensolver (GQE) an
d its application for ground state search (arXiv:2401.09253)\n- Chemically
motivated simulation problems are efficiently solvable by a quantum compu
ter (arXiv: 2401.09268)\n_________________________________________________
___________________________________________________________\n\nContact: M
ichael McGettrick\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/145/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Paul Yousefi (University of Bristol)
DTSTART:20251121T140000Z
DTEND:20251121T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/146
DESCRIPTION:Title: Machine learning strategies for biomarker development in periph
eral tissues\nby Paul Yousefi (University of Bristol) as part of Maths
seminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbst
ract\nContact: Andrew Simpkin\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/146/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Giuseppe Zurlo (University of Galway)
DTSTART:20251120T150000Z
DTEND:20251120T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/147
DESCRIPTION:Title: Why am I stuck at five foot eight?\nby Giuseppe Zurlo (Univ
ersity of Galway) as part of Maths seminars at the University of Galway\n
\nLecture held in ADB1020.\n\nAbstract\nA fundamental question in biology
is how growing organisms manage to select a final size. Experiments show a
clear divide: some tissues reliably reach a terminal size and stop prolif
erating\, while others (such as cancerous tissues) can grow indefinitely\,
up until the death of the whole tissue occurs. These contrasting behavior
s appear closely tied to how cells both sense and generate mechanical stre
sses.\n\nI will present a geometric viewpoint based on growth incompatibil
ity\, a measure of how locally growing material cannot be globally accommo
dated without inducing stress. Unlike traditional models relying on an ad
hoc “homeostatic stress”\, this approach regulates growth through a ta
rget incompatibility\, in analogy with how curvature is regulated in the E
instein–Hilbert action of General Relativity.\n\nThis analogy is surpris
ingly revealing: in relativity\, curvature determines whether the universe
stabilizes or expands forever\; in tissues\, incompatibility may determin
e whether growth halts or becomes unbounded. I will discuss how this frame
work captures observed behaviors in model biological systems and point to
a largely unexplored but mathematically rich connection between growth mec
hanics and geometric ideas originating in gravitational physics.\n\nContac
t: HY\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/147/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michel Destrade (University of Galway)
DTSTART:20260226T150000Z
DTEND:20260226T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/148
DESCRIPTION:Title: An introduction to the European Research Council grants\nby
Michel Destrade (University of Galway) as part of Maths seminars at the
University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThis talk pr
ovides an insider’s overview of the European Research Council and its fu
nding schemes\, informed by a 12-month secondment at the ERC Executive Age
ncy in Brussels in 2024-25. It explains how ERC proposals are evaluated in
practice\, with emphasis on what panels look for when assessing excellenc
e\, ambition\, and feasibility. The presentation covers the different ERC
grant types\, the structure of proposals\, the two-step evaluation process
\, common misconceptions\, and recurring reasons why strong applications m
ight fail. It also discusses how to frame a compelling frontier-research n
arrative and how to position oneself strategically for the ERC grants. \n
\nContact: HY\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/148/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ruben von Boxtel (Princess Máxima Center for Pediatric Oncology i
n Utrecht)
DTSTART:20251125T140000Z
DTEND:20251125T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/149
DESCRIPTION:Title: Tracing cancer origins using single-cell genomes\nby Ruben
von Boxtel (Princess Máxima Center for Pediatric Oncology in Utrecht) as
part of Maths seminars at the University of Galway\n\nLecture held in ADB
1020.\n\nAbstract\nUnderstanding how cancer arises is key to developing be
tter prevention and treatment strategies. Our research focuses on uncoveri
ng the origins of cancer by analyzing DNA at the single-cell level. We aim
to answer two fundamental questions: (1) why do children develop cancer d
espite minimal age-related DNA damage\, and (2) what processes drive the D
NA mutations that are required for carcinogenesis?\n \nTo address these qu
estions\, we apply single-cell whole-genome sequencing to patient samples
and use mutational patterns to reconstruct the earliest stages of cancer.
This approach allows us to trace back its origins and identify critical ev
ents that lead to malignancy. In parallel\, we use genome editing technolo
gies to introduce cancer-driving mutations into in vitro stem cell models
or expose them to potential carcinogens\, modeling the mechanisms that sha
pe cancer development.\n \nBy combining retrospective lineage tracing with
experimental validation\, our work provides unique insights into the prev
entable causes of cancer and the molecular mechanisms that enable tumors t
o arise and evolve.\n\nContact: Cathal Seoighe\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/149/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jane Breen (Ontario Technological University)
DTSTART:20251210T120000Z
DTEND:20251210T130000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/150
DESCRIPTION:Title: Kemeny's constant for Markov chains and random walks on graphs<
/a>\nby Jane Breen (Ontario Technological University) as part of Maths sem
inars at the University of Galway\n\nLecture held in AC203.\n\nAbstract\n
Kemeny's constant is an interesting and useful quantifier of how well-conn
ected the states of a Markov chain are. Though it was first introduced in
the 1960s\, interest in this concept has recently exploded. This talk will
provide an introduction to Markov chains\, an overview of the history of
Kemeny’s constant\, discussion of some applications\, and a survey of re
cent results\, with an emphasis on those where the combinatorial structure
of the Markov chain is of interest. This comes to the forefront when the
Markov chain in question is a random walk on a graph\, in which case Kemen
y's constant is interpreted as a measure of how `well-connected' the graph
is.\n\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/150/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Badriah Safarji (University of Galway)
DTSTART:20251209T093000Z
DTEND:20251209T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/151
DESCRIPTION:Title: (PhD viva) Rank distributions of graphs over the field of two e
lements\nby Badriah Safarji (University of Galway) as part of Maths se
minars at the University of Galway\n\nLecture held in ADB1020.\n\nAbstrac
t\nContact: Rachel Quinlan\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/151/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Harrison Anthony (University of Galway)
DTSTART:20251125T093000Z
DTEND:20251125T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/152
DESCRIPTION:Title: (PhD viva) Development\, implementation and evaluation of compu
tational methods to quantify intratumoral heterogeneity and microsatellite
instability\nby Harrison Anthony (University of Galway) as part of Ma
ths seminars at the University of Galway\n\nLecture held in ADB1020.\n\nA
bstract\nContact: Cathal Seoighe\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/152/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anna Grossbach (University of Galway)
DTSTART:20251121T091500Z
DTEND:20251121T094500Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/153
DESCRIPTION:Title: (PhD viva) Longitudinal Dynamics of Epigenetics in Early Life:
Uncovering Genetic and Environmental Determinants from Infancy to Adolesce
nce\nby Anna Grossbach (University of Galway) as part of Maths seminar
s at the University of Galway\n\nLecture held in ADB1020.\nAbstract: TBA\
n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/153/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jacopo Umberto Verga (University of Galway)
DTSTART:20251104T091500Z
DTEND:20251104T093000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/154
DESCRIPTION:Title: (PhD viva) A Multi-Scale Computational Analysis of the Tumor Mi
croenvironment in Blood Cancers: From Single-Cell to Spatial Determinants
of Therapy Response\nby Jacopo Umberto Verga (University of Galway) as
part of Maths seminars at the University of Galway\n\nLecture held in Bi
omedical Sciences Building (BSB) seminar room.\n\nAbstract\nContact: Eva a
nd Pilib\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/154/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Mikel Hernaez (CIMA University of Navarra)
DTSTART:20251104T140000Z
DTEND:20251104T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/155
DESCRIPTION:Title: Towards a causal understanding of dysregulated transcriptional
mechanisms in health and disease\nby Mikel Hernaez (CIMA University of
Navarra) as part of Maths seminars at the University of Galway\n\nLectur
e held in Biomedical Sciences Building (BSB) seminar room.\n\nAbstract\nCo
ntact: Eva Szegezdi\n\nOrganized by Eva Szegezdi (Biological and Chemical
Sciences)\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/155/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Michele D'Adderio (University of Pisa)
DTSTART:20260205T150000Z
DTEND:20260205T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/156
DESCRIPTION:Title: q\,t-combinatorics and sandpiles\nby Michele D'Adderio (Uni
versity of Pisa) as part of Maths seminars at the University of Galway\n\
nLecture held in ADB1020.\n\nAbstract\nIn 1987 Bak\, Tang and Wiesenfeld i
ntroduced their famous sandpile model as a first system showing self-organ
ized criticality.\nIn 1988 Macdonald introduced his famous symmetric polyn
omials.\nEach of these two discoveries produced a huge amount of research
that is still going on intensely today.\nBut until recently\, these two li
nes of research went on without any relevant communication.\nIn this talk
we show how the combinatorics generated by these two important mathematica
l objects come together in a surprising way\, proving that a strong intera
ction between these two topics is now inevitable.\n\nContact: Angela Carne
vale\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/156/
END:VEVENT
BEGIN:VEVENT
SUMMARY:__ (___)
DTSTART:20260305T150000Z
DTEND:20260305T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/157
DESCRIPTION:by __ (___) as part of Maths seminars at the University of Ga
lway\n\nLecture held in ADB1020.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/157/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Fei Chen (University of Galway)
DTSTART:20260129T150000Z
DTEND:20260129T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/158
DESCRIPTION:Title: Fast Alternating Fitting Methods for Trigonometric Curves for L
arge Data\nby Fei Chen (University of Galway) as part of Maths seminar
s at the University of Galway\n\nLecture held in ADB1020.\n\nAbstract\nPr
oblems that require fitting circles\, ellipses\, and curves of other shape
s such as dumbbell curves to data points in the plane arise in many applic
ation areas such as pattern recognition\, computer vision\, statistics\, a
nd data analysis. Available methods for fitting circles or ellipses are ve
ry sensitive to outliers in the data\, and are time consuming when the num
ber of data points is large. To the best of our knowledge\, dumbbell curve
fitting methods have not been considered in the literature. To fit such a
curve\, we introduce an alternating method where in each iterate\, a regu
larized minimization problem is solved. This talk focuses on curve fitting
methods that are attractive to use when the number of data points is larg
e.\n\nThe methods introduced in this talk are not sensitive to errors in t
he data points. Methods for fitting circles and ellipses efficiently minim
ize the sum of the squared geometric distances between the given data poin
ts and the fitted curves. The techniques developed here can be applied to
fitting other kinds of curves as well.\n\nContact: Niall Madden\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/158/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kevin Allen (UCC)
DTSTART:20260326T150000Z
DTEND:20260326T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/159
DESCRIPTION:Title: Partitions\, Overpartitions and Rank Deviations\nby Kevin A
llen (UCC) as part of Maths seminars at the University of Galway\n\nLectu
re held in ADB1020.\n\nAbstract\nA partition of a non-negative integer n i
s a weakly increasing sequence of positive integers whose sum is n. Partit
ion ranks famously provide a combinatorial explanation to Ramanujan’s co
ngruences for the partition function. In 2017\, Hickerson and Mortenson us
ed rank deviations to describe a much more\ngeneral structure surrounding
these identities. An overpartition is a partition in which the first occur
rence of each part may be overlined. In this talk\, we discuss explicit fo
rmulas for the deviations\nof an infinite family of ranks for overpartitio
ns. This is joint work with Robert Osburn and Matthias Storzer.\n\nContact
: Joshua Maglione\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/159/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Scott MacLachlan (Memorial University of Newfoundland)
DTSTART:20260423T140000Z
DTEND:20260423T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/160
DESCRIPTION:Title: Optimization and Learning in the Design of Preconditioners\
nby Scott MacLachlan (Memorial University of Newfoundland) as part of Math
s seminars at the University of Galway\n\nLecture held in ADB1020.\n\nAbs
tract\nComputer simulation algorithms are a major tool in many areas of sc
ience and industry\, particularly in areas where the behaviour of fluids o
r complex materials governs the physical processes of interest. A typical
core of these tools is the numerical approximation of the solution to coup
led nonlinear systems of partial differential equations\, relying on nonli
near and linear solvers\, such as Newton’s method and preconditioned Kry
lov iterations. Among the most effective preconditioners for these systems
are multigrid and domain decomposition methods\, which use multiscale rep
resentations of the systems to be solved to achieve linear-scaling complex
ity for the solution of these linear systems. These preconditioners typica
lly rely on heuristics in their construction\, to approximate solutions to
underlying combinatorial (and other) optimization problems that specify p
arameters and other components of the preconditioners\, based on the discr
ete problem to which they are being applied. In this talk\, I will discuss
the use of advanced optimization and machine learning techniques to appro
ximately solve these optimization problems and the impact these techniques
can have on advanced preconditioner design.\n\nContact: Niall Madden\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/160/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Luke Kelly (University College Cork)
DTSTART:20260430T140000Z
DTEND:20260430T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/161
DESCRIPTION:Title: Some recent results in Bayesian phylogenetic inference\nby
Luke Kelly (University College Cork) as part of Maths seminars at the Uni
versity of Galway\n\nLecture held in ADB1020.\n\nAbstract\nA phylogenetic
tree describes the ancestral relationships between species descended from
a common ancestor. Inferring phylogenetic trees is a challenging statistic
al problem as we try to estimate both the tree structure and parameters of
the diversification process. I will present some recent work on couplings
of Markov chains for Bayesian phylogenetic inference [Ann. Appl. Stat. 17
(2): 1419-1443 (2023)] and criteria for the consistency of Bayesian tree r
econstruction procedures [J. Am. Statist. Assoc.\, 120(551)\, 1569–1579
(2025)].\n\nContact: Andrew Simpkin\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/161/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ilia Pirashvili (University of Galway)
DTSTART:20260312T150000Z
DTEND:20260312T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/162
DESCRIPTION:Title: The Geometry of Monoids\nby Ilia Pirashvili (University of
Galway) as part of Maths seminars at the University of Galway\n\nLecture
held in ADB1020.\n\nAbstract\nMonoids are one of the simplest algebraic ob
jects\, yet are surprisingly interesting\, in part due to how many differe
nt ways we can regard them. We can think of them as groups without inverse
s (essentially the definition)\, rings without addition\, one-object categ
ories\, generalisations of toric varieties\, and many other viewpoints.\n\
nIn this talk\, we will study them from the viewpoint of algebraic geometr
y. In particular\, we will examine the different types of points we can as
sociate to monoids\, and the topologies we can define on them. We will mai
nly focus on commutative monoids\, though in the last part\, we will also
mention the non-commutative case\, if time permits.\n\nOne of the central
objects of study (other than monoids of course) will be topoi\, who play a
similar role in the world of monoids that abelian categories play in clas
sical algebraic geometry.\n\nContact: HY\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/162/
END:VEVENT
BEGIN:VEVENT
SUMMARY:__ (__)
DTSTART:20260319T150000Z
DTEND:20260319T160000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/163
DESCRIPTION:Title: __\nby __ (__) as part of Maths seminars at the University
of Galway\n\nLecture held in ADB1020.\n\nAbstract\nThis slot is free.\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/163/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Julia Münch (University of Liverpool)
DTSTART:20260409T140000Z
DTEND:20260409T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/164
DESCRIPTION:Title: Extending rational expanding Thurston maps\nby Julia Münc
h (University of Liverpool) as part of Maths seminars at the University o
f Galway\n\nLecture held in ADB1020.\n\nAbstract\nIn this talk I will pres
ent an extension result. We showed that one can extend rational expanding
Thurston maps on the Riemann sphere to uniformly quasi-regular mappings of
R^3. There are two main motivations\, one comes from the theory of quasi-
conformal mappings and one comes from generalising complex dynamics. \n\nQ
uasi-conformal mappings occur naturally in many areas of analysis\, howeve
r the notion is not preserved under products and it is not easy to extend
a given quasi-conformal map f:R^n → R^n to a quasi-conformal map F: R^(n
+1) → R^(n+1). Our result can be put in that context\, but we start with
a map that is not assumed to be injective.\n\nThe second motivation is to
generalise holomorphic dynamics to higher dimensions. Quasi-regular mappi
ngs on R^n are a natural generalisation of holomorphic maps in C. The dyna
mics is particularly nice if the same eccentricity bound on ellipses holds
for all iterates of the map\, i.e.\, if we restrict to uniformly quasi-re
gular mappings\, but it is difficult to find interesting examples of such
maps. \n\nContact: Nina Snigireva\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/164/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Andrei Cherkasov (University of Galway)
DTSTART:20260331T090000Z
DTEND:20260331T100000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/165
DESCRIPTION:Title: (PhD viva) Magneto-mechanical instabilities in soft magnetoacti
ve particulate composites\nby Andrei Cherkasov (University of Galway)
as part of Maths seminars at the University of Galway\n\nLecture held in
ADB1020.\n\nAbstract\nContact: Michel Destrade\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/165/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jenny Power
DTSTART:20260521T140000Z
DTEND:20260521T150000Z
DTSTAMP:20260422T225844Z
UID:mathseminarsnuig/166
DESCRIPTION:Title: Contact: Rachel Quinlan\nby Jenny Power as part of Maths se
minars at the University of Galway\n\nLecture held in ADB1020.\nAbstract:
TBA\n
LOCATION:https://researchseminars.org/talk/mathseminarsnuig/166/
END:VEVENT
END:VCALENDAR