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BEGIN:VEVENT
SUMMARY:Alain Goriely (Oxford University)
DTSTART;VALUE=DATE-TIME:20200602T160000Z
DTEND;VALUE=DATE-TIME:20200602T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20200604T130000Z
DTEND;VALUE=DATE-TIME:20200604T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20200611T150000Z
DTEND;VALUE=DATE-TIME:20200611T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20200618T100000Z
DTEND;VALUE=DATE-TIME:20200618T110000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20200901T130000Z
DTEND;VALUE=DATE-TIME:20200901T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201008T150000Z
DTEND;VALUE=DATE-TIME:20201008T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201112T160000Z
DTEND;VALUE=DATE-TIME:20201112T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201126T160000Z
DTEND;VALUE=DATE-TIME:20201126T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201203T160000Z
DTEND;VALUE=DATE-TIME:20201203T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201127T120000Z
DTEND;VALUE=DATE-TIME:20201127T130000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201119T160000Z
DTEND;VALUE=DATE-TIME:20201119T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20201210T160000Z
DTEND;VALUE=DATE-TIME:20201210T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210304T160000Z
DTEND;VALUE=DATE-TIME:20210304T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210318T160000Z
DTEND;VALUE=DATE-TIME:20210318T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210218T160000Z
DTEND;VALUE=DATE-TIME:20210218T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210415T080000Z
DTEND;VALUE=DATE-TIME:20210415T090000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20211104T160000Z
DTEND;VALUE=DATE-TIME:20211104T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210623T130000Z
DTEND;VALUE=DATE-TIME:20210623T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210624T103000Z
DTEND;VALUE=DATE-TIME:20210624T113000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20210916T150000Z
DTEND;VALUE=DATE-TIME:20210916T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20211021T150000Z
DTEND;VALUE=DATE-TIME:20211021T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20211028T150000Z
DTEND;VALUE=DATE-TIME:20211028T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20211015T083000Z
DTEND;VALUE=DATE-TIME:20211015T093000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220421T150000Z
DTEND;VALUE=DATE-TIME:20220421T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220203T160000Z
DTEND;VALUE=DATE-TIME:20220203T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220210T160000Z
DTEND;VALUE=DATE-TIME:20220210T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220217T160000Z
DTEND;VALUE=DATE-TIME:20220217T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220407T150000Z
DTEND;VALUE=DATE-TIME:20220407T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220602T150000Z
DTEND;VALUE=DATE-TIME:20220602T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220516T083000Z
DTEND;VALUE=DATE-TIME:20220516T093000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220512T160000Z
DTEND;VALUE=DATE-TIME:20220512T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220523T150000Z
DTEND;VALUE=DATE-TIME:20220523T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220525T150000Z
DTEND;VALUE=DATE-TIME:20220525T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220614T083000Z
DTEND;VALUE=DATE-TIME:20220614T093000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221013T140000Z
DTEND;VALUE=DATE-TIME:20221013T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220913T110000Z
DTEND;VALUE=DATE-TIME:20220913T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20220929T150000Z
DTEND;VALUE=DATE-TIME:20220929T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221103T160000Z
DTEND;VALUE=DATE-TIME:20221103T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221110T160000Z
DTEND;VALUE=DATE-TIME:20221110T170000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221110T120000Z
DTEND;VALUE=DATE-TIME:20221110T130000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221109T120000Z
DTEND;VALUE=DATE-TIME:20221109T130000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20221219T100000Z
DTEND;VALUE=DATE-TIME:20221219T110000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230202T150000Z
DTEND;VALUE=DATE-TIME:20230202T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230302T150000Z
DTEND;VALUE=DATE-TIME:20230302T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230511T140000Z
DTEND;VALUE=DATE-TIME:20230511T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230323T150000Z
DTEND;VALUE=DATE-TIME:20230323T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230330T140000Z
DTEND;VALUE=DATE-TIME:20230330T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230413T140000Z
DTEND;VALUE=DATE-TIME:20230413T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230406T140000Z
DTEND;VALUE=DATE-TIME:20230406T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230518T140000Z
DTEND;VALUE=DATE-TIME:20230518T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230420T090000Z
DTEND;VALUE=DATE-TIME:20230420T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230511T130000Z
DTEND;VALUE=DATE-TIME:20230511T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230523T110000Z
DTEND;VALUE=DATE-TIME:20230523T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230427T140000Z
DTEND;VALUE=DATE-TIME:20230427T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230525T140000Z
DTEND;VALUE=DATE-TIME:20230525T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230524T130000Z
DTEND;VALUE=DATE-TIME:20230524T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230804T140000Z
DTEND;VALUE=DATE-TIME:20230804T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230921T140000Z
DTEND;VALUE=DATE-TIME:20230921T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20230928T140000Z
DTEND;VALUE=DATE-TIME:20230928T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20231102T150000Z
DTEND;VALUE=DATE-TIME:20231102T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240307T150000Z
DTEND;VALUE=DATE-TIME:20240307T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20231005T140000Z
DTEND;VALUE=DATE-TIME:20231005T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20231109T150000Z
DTEND;VALUE=DATE-TIME:20231109T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20231117T100000Z
DTEND;VALUE=DATE-TIME:20231117T110000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240111T150000Z
DTEND;VALUE=DATE-TIME:20240111T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240215T150000Z
DTEND;VALUE=DATE-TIME:20240215T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240208T150000Z
DTEND;VALUE=DATE-TIME:20240208T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240222T150000Z
DTEND;VALUE=DATE-TIME:20240222T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240314T150000Z
DTEND;VALUE=DATE-TIME:20240314T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240328T150000Z
DTEND;VALUE=DATE-TIME:20240328T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240130T150000Z
DTEND;VALUE=DATE-TIME:20240130T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240125T150000Z
DTEND;VALUE=DATE-TIME:20240125T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240229T153000Z
DTEND;VALUE=DATE-TIME:20240229T163000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240130T093000Z
DTEND;VALUE=DATE-TIME:20240130T100000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240425T140000Z
DTEND;VALUE=DATE-TIME:20240425T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240418T140000Z
DTEND;VALUE=DATE-TIME:20240418T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240301T110000Z
DTEND;VALUE=DATE-TIME:20240301T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240222T093000Z
DTEND;VALUE=DATE-TIME:20240222T100000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240326T110000Z
DTEND;VALUE=DATE-TIME:20240326T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240509T140000Z
DTEND;VALUE=DATE-TIME:20240509T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240425T110000Z
DTEND;VALUE=DATE-TIME:20240425T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240905T140000Z
DTEND;VALUE=DATE-TIME:20240905T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
UID:mathseminarsnuig/94
DESCRIPTION:Title: TBD topic in Combinatorics\nby Mark Dukes (University Colleg
e Dublin) 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/94/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Prof Christopher Voll (Bielefeld University)
DTSTART;VALUE=DATE-TIME:20240515T150000Z
DTEND;VALUE=DATE-TIME:20240515T160000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240523T140000Z
DTEND;VALUE=DATE-TIME:20240523T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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:Leonard Henckel (University College Dublin)
DTSTART;VALUE=DATE-TIME:20240829T140000Z
DTEND;VALUE=DATE-TIME:20240829T150000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
UID:mathseminarsnuig/97
DESCRIPTION:by Leonard Henckel (University College Dublin) 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/97/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Dr Artur Gower (University of Sheffield)
DTSTART;VALUE=DATE-TIME:20240528T110000Z
DTEND;VALUE=DATE-TIME:20240528T120000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240529T130000Z
DTEND;VALUE=DATE-TIME:20240529T140000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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;VALUE=DATE-TIME:20240618T090000Z
DTEND;VALUE=DATE-TIME:20240618T100000Z
DTSTAMP;VALUE=DATE-TIME:20240715T182207Z
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
END:VCALENDAR