BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Nil Şahin (Bilkent University)
DTSTART:20260219T124000Z
DTEND:20260219T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/1
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/1/
 ">Numerical Semigroups: From the Frobenius Coin Problem to Hilbert Functio
 ns</a>\nby Nil Şahin (Bilkent University) as part of METU Mathematics Gen
 eral Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathematics
  Department.\n\nAbstract\nThe study of numerical semigroups finds its clas
 sical roots in the "Frobenius Coin Problem"\, famously popularized by J.J.
  Sylvester in the late 19th century. Sylvester’s initial question "deter
 mining the largest integer that cannot be expressed as a non-negative inte
 ger linear combination of a given set of coprime integers" laid the ground
 work for what is now a rich intersection of combinatorics and commutative 
 algebra.\n\nThrough the construction of semigroup rings\, these combinator
 ial objects provide a natural framework for studying the geometric and alg
 ebraic properties of monomial curves. In particular\, the link between the
  numerical semigroup and the Hilbert function of its associated graded rin
 g has become a focal point of recent research. Characterizing numerical fu
 nctions that might be Hilbert functions of one-dimensional Cohen-Macaulay 
 local rings is an open question.\n\nThere is a conjecture by Judith Sally 
 stating that the "Hilbert function of a one-dimensional Cohen-Macaulay loc
 al ring with small enough embedding dimension is non-decreasing". In this 
 talk\, we will focus on 4-generated symmetric and pseudo-symmetric monomia
 l curves. We will demonstrate that 4-generated pseudo-symmetric monomial c
 urves satisfy Sally’s conjecture.\n
LOCATION:https://researchseminars.org/talk/METU_Math/1/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Haydar Göral (IZTECH)
DTSTART:20260226T124000Z
DTEND:20260226T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/2
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/2/
 ">Counting Arithmetic Progressions in Finite Rings</a>\nby Haydar Göral (
 IZTECH) as part of METU Mathematics General Seminar\n\n\nAbstract\nFinding
  arbitrarily long arithmetic progressions in certain subsets of the intege
 rs has become one of the most important problems in mathematics over the l
 ast century. One of the most famous results in this area was proved by Sze
 merédi in 1975\, and it states that every subset of the positive integers
  with positive upper density contains arbitrarily long arithmetic progress
 ion. In this talk\, we will discuss some results concerning the number of 
 3-term arithmetic progressions in certain subsets of finite rings using fi
 nite Fourier analysis.\n\nInterested participants may send an email to Oğ
 uz Şavk to receive the Google Meet link.\n
LOCATION:https://researchseminars.org/talk/METU_Math/2/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Deniz Yılmaz (Bilkent University)
DTSTART:20260305T124000Z
DTEND:20260305T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/3
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/3/
 ">A Categorical Perspective on Representation Theory</a>\nby Deniz Yılmaz
  (Bilkent University) as part of METU Mathematics General Seminar\n\nLectu
 re held in Gündüz İkeda Seminar Room\, Mathematics Department.\n\nAbstr
 act\nGroups arise naturally in the study of symmetry\, and representation 
 theory studies\ngroups through linear algebra. In this talk\, we will intr
 oduce a categorical framework in\nwhich finite groups appear as objects an
 d the morphisms between them encode natural\noperations from representatio
 n theory. After introducing the classical theory of bisets and\nbiset func
 tors\, we will discuss two related refinements: diagonal $p$-permutation f
 unctors\,\nobtained from suitable bimodules\, and $p$-bifree biset functor
 s\, obtained by restricting to a\ndistinguished class of bisets. These con
 structions connect naturally with current questions\nin modular representa
 tion theory\, especially local-global conjectures.\n
LOCATION:https://researchseminars.org/talk/METU_Math/3/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Cihan Bahran (Bilkent University)
DTSTART:20260312T124000Z
DTEND:20260312T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/4
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/4/
 ">Character Polynomials for Symmetric Groups and FI-modules</a>\nby Cihan 
 Bahran (Bilkent University) as part of METU Mathematics General Seminar\n\
 nLecture held in Gündüz İkeda Seminar Room\, Mathematics Department.\n\
 nAbstract\nFor every positive integer $r$\, the number of cycles of length
  $r$ in the cycle decomposition of a permutation is a class function $X_r$
  which is simultaneously defined on every symmetric group. A polynomial in
  terms of $X_r$'s is called a character polynomial\, describing a sequence
  of (virtual) $S_n$ representations for every $n$. In this talk I will dis
 cuss how such sequences arise in particular examples of interest and time 
 permitting explain how the theory of FI-modules provides a general framewo
 rk for their occurrence.\n
LOCATION:https://researchseminars.org/talk/METU_Math/4/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holiday (No Seminar)
DTSTART:20260319T124000Z
DTEND:20260319T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/5
DESCRIPTION:by Holiday (No Seminar) as part of METU Mathematics General Se
 minar\n\nLecture held in Ikeda Seminar Room\, Mathematics Department.\nAbs
 tract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/5/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Kâzım İlhan İkeda (Boğaziçi University & Feza Gürsey Center
  for Physics and Mathematics)
DTSTART:20260326T124000Z
DTEND:20260326T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/6
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/6/
 ">A Statistical Approach to the Global Artin Reciprocity Map: An Unconditi
 onal Non-abelian Global Class Field Theory</a>\nby Kâzım İlhan İkeda (
 Boğaziçi University & Feza Gürsey Center for Physics and Mathematics) a
 s part of METU Mathematics General Seminar\n\nLecture held in Gündüz İk
 eda Seminar Room\, Mathematics Department.\n\nAbstract\nIn this talk\, bor
 rowing tools from statistics\, we shall first construct\, following T. Ono
 \, an unconditional non-Abelian generalization of the global Artin recipro
 city map for any finite Galois extension $\\mathbf{E}$ of a global field $
 \\mathbf{F}$. This theory has deep connections with the Langlands reciproc
 ity principle\, while the latter is still conjectural. In the second part 
 of the talk\, we plan to discuss some properties of the Ono reciprocity ma
 p for $\\mathbf{E}/\\mathbf{F}$\, and construct the (absolute) Ono recipro
 city map for $\\mathbf{F}^{sep}/\\mathbf{F}$. Finally\, we plan to give a 
 description of the maximal unramified extension of $\\mathbf{F}$ inside $\
 \mathbf{F}^{sep}$\, which is closely related with the Golod-Shafarevich Th
 eory. This is joint work with my PhD student Serkan Kızılavuz (Eskişehi
 r Technical University).\n
LOCATION:https://researchseminars.org/talk/METU_Math/6/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tülin Altunöz (Başkent University)
DTSTART:20260402T124000Z
DTEND:20260402T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/7
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/7/
 ">Lefschetz Fibrations with Arbitrary Slope</a>\nby Tülin Altunöz (Başk
 ent University) as part of METU Mathematics General Seminar\n\nLecture hel
 d in Gündüz İkeda Seminar Room\, Mathematics Department.\n\nAbstract\nI
 n joint work with Adalet Çengel\, we proved that for any real number $r \
 \in (2\, 8)$\, there exists a genus-$g$ Lefschetz fibration over the two-s
 phere with large enough genus-$g$ having the slope arbitrarily close to $r
 $. In this talk\, I am planning to explain this work.\n
LOCATION:https://researchseminars.org/talk/METU_Math/7/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Todor Tsankov (UCB Lyon 1)
DTSTART:20260409T124000Z
DTEND:20260409T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/8
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/8/
 ">Comeager Isomorphism Classes in Zero-dimensional Dynamics</a>\nby Todor 
 Tsankov (UCB Lyon 1) as part of METU Mathematics General Seminar\n\nLectur
 e held in Zoom (Meeting ID: 870 2331 0873).\n\nAbstract\nIt is often possi
 ble to parametrize a given class of dynamical systems by elements of a Pol
 ish space and then it becomes natural to ask what properties hold "generic
 ally"\, i.e.\, for a comeager set of systems. The most extreme situation i
 s when there is a single comeager isomorphism class: that is\, the generic
  properties are captured by a single system. I will survey what is known a
 bout this problem in zero-dimensional topological dynamics\, that is\, cou
 ntable group actions on the Cantor space. I will focus on some recent join
 t work with Michal Doucha and Julien Melleray concerning minimal systems.\
 n\nFor the Zoom meeting passcode\, please contact the co-organizer\, Oğuz
  Şavk.\n
LOCATION:https://researchseminars.org/talk/METU_Math/8/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holiday (No Seminar)
DTSTART:20260423T124000Z
DTEND:20260423T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/9
DESCRIPTION:by Holiday (No Seminar) as part of METU Mathematics General Se
 minar\n\nLecture held in Ikeda Seminar Room\, Mathematics Department.\nAbs
 tract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/9/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Ödül Tetik (University of Vienna)
DTSTART:20260430T124000Z
DTEND:20260430T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/10
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/10
 /">On a conjecture of Ayala–Francis–Rozenblyum</a>\nby Ödül Tetik (U
 niversity of Vienna) as part of METU Mathematics General Seminar\n\n\nAbst
 ract\nEvery finite homotopy type can be realised by a smooth manifold. I w
 ill present some finite stratified homotopy types which cannot be realised
  by conically smooth manifolds\, disproving a 2015 conjecture of Ayala\, F
 rancis and Rozenblyum.\n\nThe seminar will be streamed on Zoom.  For the m
 eeting information\, please contact the co-organizer\, Oğuz Şavk.\n
LOCATION:https://researchseminars.org/talk/METU_Math/10/
END:VEVENT
BEGIN:VEVENT
SUMMARY:András Stipsicz (Alfréd Rényi Institute of Mathematics)
DTSTART:20260508T124000Z
DTEND:20260508T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/11
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/11
 /">Arf Lectures 2026: Exotica in Dimension Four</a>\nby András Stipsicz (
 Alfréd Rényi Institute of Mathematics) as part of METU Mathematics Gener
 al Seminar\n\nLecture held in Ikeda Seminar Room\, Mathematics Department.
 \n\nAbstract\nFour-dimensional spaces behave very differently than spaces 
  of any other dimension. This ‘exotic’ behavior was unrevealed by work
  of Freedman and  Donaldson in the early 80’s\, and led to several surpr
 ising and interesting discoveries since then. In the lecture we will conce
 ntrate on exotica on ‘definite’  four-manifolds\, and indicate their r
 elevance in the ’smooth  four-dimensional Poincaré conjecture’ the la
 st open question in this  circle of problems regarding the topology of sph
 eres.\n
LOCATION:https://researchseminars.org/talk/METU_Math/11/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bülent Tosun (University of Alabama)
DTSTART:20260521T124000Z
DTEND:20260521T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/12
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/12
 /">Convexity and embedding problems for 3-manifolds</a>\nby Bülent Tosun 
 (University of Alabama) as part of METU Mathematics General Seminar\n\nLec
 ture held in Ikeda Seminar Room\, Mathematics Department.\n\nAbstract\nGiv
 en a closed\, orientable $3$-manifold\, it is of great interest but often 
 a difficult (and largely open) problem to determine whether the $3$-manifo
 ld smoothly embeds in $4$-dimensional Euclidean space. On the other hand\,
  under additional geometric considerations coming from symplectic topology
 \, such as hypersurfaces of contact type\, the problem becomes tractable a
 nd in certain cases a uniform answer is possible. In this talk\, I will re
 view these concepts and recent results and explain how they relate to the 
 various complex analytic notions of convexity such as pseudoconvexity and 
 rational convexity. I will also report on recent work in progress that ext
 ends our results to symplectic $4$-manifolds other than the Euclidean spac
 e\, such as rational surfaces.\n
LOCATION:https://researchseminars.org/talk/METU_Math/12/
END:VEVENT
BEGIN:VEVENT
SUMMARY:M. Levent Doğan (Ludwig-Maximilians-Universität München)
DTSTART:20260514T124000Z
DTEND:20260514T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/13
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/13
 /">A Minimax Theorem for Convex Optimization on Moment Polytopes</a>\nby M
 . Levent Doğan (Ludwig-Maximilians-Universität München) as part of METU
  Mathematics General Seminar\n\nLecture held in Gündüz İkeda Seminar Ro
 om\, Mathematics Department.\n\nAbstract\nStrassen's asymptotic spectrum o
 ffers a framework for analyzing the complexity of tensors. It has found ap
 plications in diverse areas\, from computer science to additive combinator
 ics and quantum information. A long-standing open problem\, dating back to
  1991\, asks whether Strassen's support functionals are universal spectral
  points\, that is\, points in the asymptotic spectrum of tensors.\n\nIn th
 is talk\, we answer this question in the affirmative by proving that the s
 upport functionals coincide with the quantum functionals - universal spect
 ral points that are defined via entropy optimization on entanglement polyt
 opes. We obtain this result as a special case of a general minimax formula
  for convex optimization on entanglement polytopes (and other moment polyt
 opes) that has further applications to other tensor parameters\, including
  the asymptotic slice rank. Our proof is based on a recent Fenchel-type du
 ality theorem on Hadamard manifolds due to Hirai.\n
LOCATION:https://researchseminars.org/talk/METU_Math/13/
END:VEVENT
BEGIN:VEVENT
SUMMARY:András Stipsicz (Alfréd Rényi Institute of Mathematics)
DTSTART:20260509T090000Z
DTEND:20260509T095000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/14
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/14
 /">Special Seminar: Exotic Four-manifolds with Cyclic Fundamental Group</a
 >\nby András Stipsicz (Alfréd Rényi Institute of Mathematics) as part o
 f METU Mathematics General Seminar\n\nLecture held in Gündüz İkeda Semi
 nar Room\, Mathematics Department.\n\nAbstract\nWe will show methods for c
 onstructing exotic four-manifolds with\nfundamental group $\\mathbb{Z}_2$\
 , and some extensions to further cases of non-trivial\nfundamental groups.
  We also plan to point out several open questions along\nthe way.\n
LOCATION:https://researchseminars.org/talk/METU_Math/14/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holiday (No Seminar)
DTSTART:20260528T124000Z
DTEND:20260528T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/15
DESCRIPTION:by Holiday (No Seminar) as part of METU Mathematics General Se
 minar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathematics Depart
 ment.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/15/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Erman Işık (Bilkent University)
DTSTART:20260416T124000Z
DTEND:20260416T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/16
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/16
 /">The Growth of Tate-Shafarevich Groups of $p$-supersingular Elliptic Cur
 ves over Anticyclotomic $\\mathbb{Z}_p$-extensions at Inert Primes</a>\nby
  Erman Işık (Bilkent University) as part of METU Mathematics General Sem
 inar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathematics Departm
 ent.\n\nAbstract\nIn this talk\, we will discuss the asymptotic growth of 
 both the Mordell-Weil ranks and the Tate–Shafarevich groups for an ellip
 tic curve $E$ defined over the rational numbers\, focusing on its behaviou
 r along the anticyclotomic $\\mathbb{Z}_p$-extension of an imaginary quadr
 atic $K$. Here\, $p$ is a prime at which $E$ has good supersingular reduct
 ion and is inert in $K$. After reviewing the definition and key properties
  of the plus and minus Selmer groups in Iwasawa theory\, we explain how th
 ese objects can be used to extract arithmetic information about the ellipt
 ic curve $E$.\n\nThe seminar will be also streamed on Zoom.  For the meeti
 ng information\, please contact the co-organizer\, Oğuz Şavk.\n
LOCATION:https://researchseminars.org/talk/METU_Math/16/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Özlem Ejder (Koç University)
DTSTART:20260604T124000Z
DTEND:20260604T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/17
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/17
 /">Settled elements in arboreal Galois Groups</a>\nby Özlem Ejder (Koç U
 niversity) as part of METU Mathematics General Seminar\n\nLecture held in 
 Gündüz İkeda Seminar Room\, Mathematics Department.\n\nAbstract\nOver t
 he rational numbers\, it is conjectured that the number of irreducible fac
 tors of the iterates of a polynomial is eventually constant. How do the it
 erates of a polynomial behave over finite fields? This brings us to the no
 tion of settledness.\n\nIn this talk\, we will discuss two settled objects
 : a settled polynomial and a settled tree automorphism. The connection bet
 ween them is given via Frobenius elements acting in the Galois groups of p
 olynomial iterates. These groups\, called arboreal Galois groups\, are nat
 urally subgroups of the automorphism group of a regular binary tree formed
  by the iterated preimages of 0 under a polynomial.\n\nWe will explore how
  the dynamics and geometry of a polynomial shape the arithmetic and group-
 theoretic properties of these arboreal Galois groups and discuss recent pr
 ogress on a conjecture of Boston and Jones concerning settledness for quad
 ratic polynomials.\n\nThe seminar will be in-person.\n
LOCATION:https://researchseminars.org/talk/METU_Math/17/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bayram Tekin (Bilkent University)
DTSTART:20261001T130000Z
DTEND:20261001T135000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/18
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/18
 /">Where does the energy live on a manifold? Some recent results on conser
 ved quantities in spacetime</a>\nby Bayram Tekin (Bilkent University) as p
 art of METU Mathematics General Seminar\n\nLecture held in Gündüz İkeda
  Seminar Room\, Mathematics Department.\n\nAbstract\nGeneral Relativity mo
 dels gravitation as a 3+1-dimensional pseudo-Riemannian manifold.\nThis co
 nnects concepts like mass\, momentum\, and angular momentum to differentia
 l geometric invariants of the underlying manifold. We will discuss our rec
 ent work on this\, where we express these quantities in terms of the Riema
 nn tensor rather than the first derivative of the metric tensor. The relev
 ant details can be found in: https://arxiv.org/abs/2607.25646\n
LOCATION:https://researchseminars.org/talk/METU_Math/18/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Gökhan Benli (METU)
DTSTART:20261008T124000Z
DTEND:20261008T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/19
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/19
 /">Topological full groups</a>\nby Gökhan Benli (METU) as part of METU Ma
 thematics General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\
 , Mathematics Department.\n\nAbstract\nTopological full groups originally 
 arose in the study of Cantor dynamical systems as invariants of conjugacy.
  Over the past two decades\, they have evolved into a rich source of count
 erexamples and novel phenomena in geometric group theory. Roughly speaking
 \, given a group acting by homeomorphisms on a zero-dimensional space (suc
 h as the Cantor set)\, its topological full group consists of all homeomor
 phisms that locally look like elements of the acting group. These groups y
 ielded the first known examples of infinite\, finitely generated\, amenabl
 e simple groups  and established deep bridges connecting topological dynam
 ics and group theory.\n\nThis talk will serve as a self-contained introduc
 tion to topological full groups. After providing historical background we 
 will explore the dynamical machinery connecting Cantor systems to these gr
 oups. We  will also present recent results regarding  finite presentabilit
 y and free subgroups of topological full groups.\n
LOCATION:https://researchseminars.org/talk/METU_Math/19/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Aslı Pekcan Yıldız (Hacettepe University)
DTSTART:20261015T124000Z
DTEND:20261015T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/20
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/20
 /">Integrable PDEs with nonlocalities</a>\nby Aslı Pekcan Yıldız (Hacet
 tepe University) as part of METU Mathematics General Seminar\n\nLecture he
 ld in Gündüz İkeda Seminar Room\, Mathematics Department.\n\nAbstract\n
 This talk will first introduce integrable differential equations and the c
 oncept of solitons. The origin of Ablowitz–Musslimani-type nonlocal redu
 ctions and their relationship with classical integrable systems will then 
 be considered. Using the nonlinear Schrödinger system (NLS) as an illustr
 ative example\, it will be shown how nonlocal reductions are obtained. Hir
 ota's bilinear method will subsequently be introduced\, and its role in de
 riving soliton solutions of nonlocal integrable equations will be explaine
 d. Soliton solutions obtained for the NLS system and its nonlocal reductio
 ns\, together with recent studies on shifted nonlocal reductions\, will be
  presented. It will also be demonstrated that\, for real shift parameters\
 , shifted nonlocal equations can be transformed into their unshifted count
 erparts through suitable translations of the independent variables. Finall
 y\, possible directions for future research will be discussed.\n
LOCATION:https://researchseminars.org/talk/METU_Math/20/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Burak Kaya (METU)
DTSTART:20261022T124000Z
DTEND:20261022T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/21
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/METU_Math/21
 /">Topological Ramsey numbers of countable ordinals</a>\nby Burak Kaya (ME
 TU) as part of METU Mathematics General Seminar\n\nLecture held in Gündü
 z İkeda Seminar Room\, Mathematics Department.\n\nAbstract\nIn broad term
 s\, Ramsey theory can be described as the study of when certain "patterns"
  must appear in sufficiently large combinatorial structures. Ramsey theory
  of ordinals and cardinals has been an active research area since the intr
 oduction of partition calculus by Erd\\H{o}s and Rado in 1950's. These stu
 dies were later generalized to topological spaces by Baumgartner. In recen
 t years\, Caicedo and Hilton initiated an investigation of closed and topo
 logical partition relations on countable ordinals and this investigation h
 as attracted some attention.\n\nIn the first part of the talk\, we will br
 iefly review some old results in partition calculus of countable ordinals 
 and their topological counterparts. In the second part of the talk\, we wi
 ll present some new bounds for the closed Ramsey numbers $R^{cl}(\\alpha\,
 3)$ with $\\alpha<\\omega^2$.\n\nThe results in the second half of the tal
 k are from joint work with Duman\, Gönül\, Saxena and Tamer. This work i
 s supported by the Scientific and Technological Research Council of Türki
 ye (TÜBİTAK) under the Project Number 124F353.\n\nThe talk will be self-
 contained in the sense that no prior knowledge on Ramsey theory or set the
 ory is necessary.\n
LOCATION:https://researchseminars.org/talk/METU_Math/21/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holiday (No Seminar)
DTSTART:20261029T124000Z
DTEND:20261029T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/22
DESCRIPTION:by Holiday (No Seminar) as part of METU Mathematics General Se
 minar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathematics Depart
 ment.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/22/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Özge Ülkem (Academia Sinica)
DTSTART:20261105T124000Z
DTEND:20261105T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/23
DESCRIPTION:by Özge Ülkem (Academia Sinica) as part of METU Mathematics 
 General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathemat
 ics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/23/
END:VEVENT
BEGIN:VEVENT
SUMMARY:İlkan Yıldırım (Mikrogroup)
DTSTART:20261112T124000Z
DTEND:20261112T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/24
DESCRIPTION:by İlkan Yıldırım (Mikrogroup) as part of METU Mathematics
  General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathema
 tics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/24/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Jean-Yves Welschinger (UCB Lyon 1)
DTSTART:20261119T124000Z
DTEND:20261119T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/25
DESCRIPTION:by Jean-Yves Welschinger (UCB Lyon 1) as part of METU Mathemat
 ics General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, Math
 ematics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/25/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Konstantinos Maronikolakis (Bilkent University)
DTSTART:20261126T124000Z
DTEND:20261126T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/26
DESCRIPTION:by Konstantinos Maronikolakis (Bilkent University) as part of 
 METU Mathematics General Seminar\n\nLecture held in Gündüz İkeda Semina
 r Room\, Mathematics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/26/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Elif Medetoğulları (TED University)
DTSTART:20261203T124000Z
DTEND:20261203T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/27
DESCRIPTION:by Elif Medetoğulları (TED University) as part of METU Mathe
 matics General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, M
 athematics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/27/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Enis Kaya (Bilkent University)
DTSTART:20261210T124000Z
DTEND:20261210T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/28
DESCRIPTION:by Enis Kaya (Bilkent University) as part of METU Mathematics 
 General Seminar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathemat
 ics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/28/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Aristotelis Panagiotopoulos (University of Vienna and University o
 f Crete)
DTSTART:20261217T124000Z
DTEND:20261217T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/29
DESCRIPTION:by Aristotelis Panagiotopoulos (University of Vienna and Unive
 rsity of Crete) as part of METU Mathematics General Seminar\n\nLecture hel
 d in Gündüz İkeda Seminar Room\, Mathematics Department.\nAbstract: TBA
 \n
LOCATION:https://researchseminars.org/talk/METU_Math/29/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Eda Kırımlı (University of Birmingham)
DTSTART:20261224T124000Z
DTEND:20261224T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/30
DESCRIPTION:by Eda Kırımlı (University of Birmingham) as part of METU M
 athematics General Seminar\n\nLecture held in Gündüz İkeda Seminar Room
 \, Mathematics Department.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/30/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Holiday (No Seminar)
DTSTART:20261231T124000Z
DTEND:20261231T133000Z
DTSTAMP:20261023T093847Z
UID:METU_Math/31
DESCRIPTION:by Holiday (No Seminar) as part of METU Mathematics General Se
 minar\n\nLecture held in Gündüz İkeda Seminar Room\, Mathematics Depart
 ment.\nAbstract: TBA\n
LOCATION:https://researchseminars.org/talk/METU_Math/31/
END:VEVENT
END:VCALENDAR