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X-WR-CALNAME:IMBM seminars
X-WR-CALDESC:Talks and events at the Istanbul Center for Mathematical Sci
 ences
X-WR-TIMEZONE:Europe/Istanbul
BEGIN:VTIMEZONE
TZID:Europe/Istanbul
BEGIN:STANDARD
DTSTART:20160907T000000
TZOFFSETFROM:+0300
TZOFFSETTO:+0300
TZNAME:+03
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:2026-10-23-imbmmathematicsdaysix-57xba@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261023T1000–1600
DTEND;TZID=Europe/Istanbul:NaNNaNNaNTNaNNaN00
SUMMARY:IMBM Mathematics Days IX
LOCATION:TB 130\, Boğaziçi University South Campus
DESCRIPTION:The day opens at 10:00 with remarks on the twentieth annivers
 ary of IMBM\, followed by four talks.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-23-eminesuleyazc-wf3xd8@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261023T103000
DTEND;TZID=Europe/Istanbul:20261023T113000
SUMMARY:Emine Şule Yazıcı (Koç University) — On the minimum number 
 of entries in a set of maximal mutually orthogonal partial Latin squares
LOCATION:TB 130\, Boğaziçi University South Campus
DESCRIPTION:The problem addressed in this talk concerns partial Latin squ
 ares. It is related to the Turán-type problem of determining the maximu
 m size of a multipartite graph that does not contain any copy of a speci
 fic complete graph $K_r$. In graph-theoretic terms\, we show that for su
 fficiently large $n$\, the minimum number of $K_r$ subgraphs that must b
 e removed from the complete $r$-partite graph $K_{r\\times n}$ in order 
 to leave a $K_r$-free graph is approximately $n^2/(r-1)$.\n\nA Partial L
 atin square of order $n$\, denoted by $\\mathrm{PLS}(n)$\, is an $n \\ti
 mes n$ array\, with entries from an $n$-element set\, such that each ele
 ment of this set occurs at most one in every row and every column of the
  array. A maximal $\\mathrm{PLS}(n)$ is a partial Latin square of order 
 $n$ that cannot be extended to another $\\mathrm{PLS}(n)$ by inserting a
 ny entry into any empty cell. For $k \\geq 2$\, $k$ Partial Latin square
 s of the same order $n$ are said to be mutually orthogonal if\, when sup
 erimposed\, each of the $\\binom{k}{2}n^2$ possible ordered pairs of ent
 ries appears at most once in the cells of the superimposed square. A max
 imal $k$-$\\mathrm{OPLS}(n)$ is a $k$-$\\mathrm{OPLS}(n)$ that cannot be
  extended to another $k$-$\\mathrm{OPLS}(n)$ by inserting any possible e
 ntry $k$-tuple into any empty cell.\n\nWe show that a maximal $k$-$\\mat
 hrm{OPLS}(n)$ has at least $n^2/(k+1)$ filled cells when $k = 2$ or $3$ 
 or if the array is balanced\, settling a earlier conjecture in the liter
 ature. We also determine the size of the minimum size maximal $k$-$\\mat
 hrm{OPLS}(n)$s and prove that these arrays are unique up to row column p
 ermutations.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-23-kubrabenli-1e2y5a7@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261023T115000
DTEND;TZID=Europe/Istanbul:20261023T125000
SUMMARY:Kübra Benli (Boğaziçi University) — Prime numbers in arithme
 tic progressions
LOCATION:TB 130\, Boğaziçi University South Campus
DESCRIPTION:Let $q \\geq 3$ be an integer. Let $a$ be an integer with $(a
 \, q) = 1$. The prime number theorem for arithmetic progressions gives a
 n asymptotic formula for the number of primes $p \\leq x$ with $p \\equi
 v a \\bmod q$. In this talk\, we will first investigate this asymptotic 
 formula with available error terms. Then\, we will focus on the sign of 
 the normalized error term for the count of primes in arithmetic progress
 ions\, briefly introducing some problems in ‘Comparative Prime Number 
 Theory’. Finally\, based on a joint work with Greg Martin and Paul Pé
 ringuey\, we will discuss the logarithmic density of positive real numbe
 rs $x$ for which the normalized error terms for the counts of primes $\\
 equiv a \\bmod q$ and $\\equiv b \\bmod q$ up to $x$ are of the same sig
 n for $(ab\, q) = 1$\; under the Generalized Riemann Hypothesis and the 
 Linear Independence Hypothesis.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-23-kadriilkerberktav-19kmo85@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261023T140000
DTEND;TZID=Europe/Istanbul:20261023T150000
SUMMARY:Kadri İlker Berktav (Middle East Technical University) — Recen
 t developments in derived contact geometry
LOCATION:TB 130\, Boğaziçi University South Campus
DESCRIPTION:This talk discusses contact structures within the context of 
 derived algebraic geometry\, a framework that combines algebraic geometr
 y with homotopy theory via the language of higher category theory. We be
 gin by reviewing derived symplectic geometry and some key results from t
 he literature. We then present the derived contact setting using concept
 s adapted from the symplectic case and outline our results on derived co
 ntact geometry\, including Darboux-type theorems\, the construction of c
 ertain moduli spaces inheriting a shifted contact structure\, the Legend
 rian intersection theorem\, and the contact AKSZ construction for mappin
 g stacks.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-23-konstantinosmaronikolaki-19mwaxq@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261023T151500
DTEND;TZID=Europe/Istanbul:20261023T161500
SUMMARY:Konstantinos Maronikolakis (Bilkent University) — How bad can t
 he radial behaviour of a holomorphic function be?
LOCATION:TB 130\, Boğaziçi University South Campus
DESCRIPTION:In this talk\, we will focus on holomorphic functions on the 
 unit disc. It is clear that the radial limit of such functions need not 
 exist as we approach some point of the unit circle. Indeed\, we can thin
 k of simple examples where the radial limit is infinity. Can the limit f
 ail to exist in another way? Can the limit fail to exist on many points 
 of the unit circle? The heuristic answer that we will arrive at is that 
 most holomorphic functions have maximally bad radial behaviour. During t
 he talk\, we will explore the methods and recent developments on these k
 inds of questions. In particular\, we will emphasise the importance of s
 imultaneous approximation\, which underlies these results.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-09-28-cemyalmozel-17jtzxq@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260928T143000
DTEND;TZID=Europe/Istanbul:20260928T153000
SUMMARY:Cem Yalım Özel (Boğaziçi University) — Building 3-manifolds
  via surgery on links in S³\, part I
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-05-keremkubilay-1k4lidq@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261005T143000
DTEND;TZID=Europe/Istanbul:20261005T153000
SUMMARY:Kerem Kubilay (Boğaziçi University) — Handle decomposition of
  complements of algebraic constructions in CP²\, part I
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-12-cemyalmozel-1cp80w9@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261012T143000
DTEND;TZID=Europe/Istanbul:20261012T153000
SUMMARY:Cem Yalım Özel (Boğaziçi University) — Building 3-manifolds
  via surgery on links in S³\, part II
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-10-19-feritozturk-15ctcix@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261019T143000
DTEND;TZID=Europe/Istanbul:20261019T153000
SUMMARY:Ferit Öztürk (Boğaziçi University) — Algebraic construction
 s\, part I: Patchworking
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-11-02-hasanylmaz-dxo9dg@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261102T143000
DTEND;TZID=Europe/Istanbul:20261102T153000
SUMMARY:Hasan Yılmaz (Boğaziçi University)
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-12-07-burakozbagc-1s8bfim@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261207T143000
DTEND;TZID=Europe/Istanbul:20261207T153000
SUMMARY:Burak Özbağcı (Koç University)
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-12-16-grigorymikhalkin-180ufte@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20261216T1400–1600
DTEND;TZID=Europe/Istanbul:NaNNaNNaNTNaNNaN00
SUMMARY:Grigory Mikhalkin (University of Geneva)
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-03-24-cedricvillani-1yokyrn@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260324T150000
DTEND;TZID=Europe/Istanbul:20260324T160000
SUMMARY:Cédric Villani (Université Claude Bernard Lyon 1 and Institut C
 amille Jordan) — Statistics in Its New Glory: From Statistical Physics
  to Geometric Analysis\, to Information Theory\, to Machine Learning
LOCATION:TB 310\, Boğaziçi University South Campus
DESCRIPTION:A special lecture given with the support of the French Embass
 y.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-11-andrasstipsicz-1m6toxk@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260511T113000
DTEND;TZID=Europe/Istanbul:20260511T123000
SUMMARY:András Stipsicz (Alfréd Rényi Institute of Mathematics) — Ex
 otica in dimension four
DESCRIPTION:Four dimensional spaces behave very differently than spaces o
 f any other dimension. This ‘exotic’ behaviour was unrevealed by wor
 k of Freedman and Donaldson in the early 80’s\, and led to several sur
 prising and interesting discoveries since then. In the lecture we will c
 oncentrate on exotica on ‘definite’ four-manifolds\, and indicate th
 eir relevance in the ’smooth four-dimensional Poincaré conjecture’ 
 the last open question in this circle of problems regarding the topology
  of spheres.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-14-imbmistanbultopologydays-1xjclr4@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;VALUE=DATE:20260514
DTEND;VALUE=DATE:20260515
SUMMARY:IMBM Istanbul Topology Days: A Conference on Developments in Cont
 act Topology\, Mapping Class Groups\, and Beyond
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:A four-day conference on developments in contact topology\, m
 apping class groups and low-dimensional topology. Eight invited speakers
 \, most giving both a background talk and a research talk\, and a sessio
 n of ten lightning talks by younger researchers. Scientific committee: K
 o Honda (UCLA)\, Yıldıray Ozan (METU)\, Athanase Papadopoulos (Univers
 ity of Strasbourg). Organising committee: Bahar Acu (Boğaziçi Universi
 ty and Pitzer College)\, Ferit Öztürk (Boğaziçi University)\, Öykü
  Yurttaş (Boğaziçi University and Dicle University). Supported by TÜ
 BİTAK 1001 under grant 124F147 and by the TMD-MAD fund of the Turkish M
 athematical Society.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-14-aleksandramarinkovic-1r4p0gs@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260514T100000
DTEND;TZID=Europe/Istanbul:20260514T110000
SUMMARY:Aleksandra Marinković (University of Belgrade) — Symplectic an
 d contact toric manifolds
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Background talk. I will first explain basic properties of tor
 ic actions on closed symplectic manifolds\, then introduce toric actions
  on symplectic manifolds with a convex or concave contact type boundary.
  Such a toric action preserves the contact structure on the boundary\, s
 o the boundary itself is a contact toric manifold. To every contact tori
 c manifold we associate a moment cone\, the moment map image of the symp
 lectisation\, which also admits a toric action. I will describe how to r
 ecognise from the moment cone whether the contact toric 3-manifold is ti
 ght or overtwisted.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-14-andywand-1lu201d@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260514T143000
DTEND;TZID=Europe/Istanbul:20260514T153000
SUMMARY:Andy Wand (University of Glasgow) — Mapping class group monoids
  in contact topology
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Background talk. Many fundamental properties of contact struc
 tures can be characterised by monoids in surface mapping class groups\; 
 this viewpoint provides a particularly accessible framework for introduc
 ing such properties. This talk will describe a number of these monoids\,
  focusing on background concepts and relevance to current research.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-14-bulenttosun-o8uref@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260514T160000
DTEND;TZID=Europe/Istanbul:20260514T170000
SUMMARY:Bülent Tosun (University of Alabama) — On embedding problems f
 or 3-manifolds in 4-space
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Background talk. Given a closed\, orientable 3-manifold Y\, i
 t is of great interest but often difficult to determine whether Y may be
  smoothly embedded in R⁴. This is the case even for integer homology s
 pheres\, and restricting to special classes such as Seifert manifolds\; 
 the problem is open in general. Under additional geometric consideration
 s coming from symplectic geometry\, or complex geometry\, the problems o
 ften become tractable and in certain cases a uniform answer is possible.
  I will survey these perspectives and highlight related conjectures and 
 open problems.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-14-mustafakorkmaz-1orrpxr@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260514T113000
DTEND;TZID=Europe/Istanbul:20260514T123000
SUMMARY:Mustafa Korkmaz (Middle East Technical University) — Mapping cl
 ass groups of surfaces
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Background talk. The surface mapping class group is a fundame
 ntal object in low-dimensional topology. In this introductory talk I wil
 l introduce these groups and their group-theoretical properties\, specia
 lising on certain relations and various generating sets.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-15-elifmedetogullar-2io10m@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260515T160000
DTEND;TZID=Europe/Istanbul:20260515T170000
SUMMARY:Elif Medetoğulları (TED University) — Ping-Pong and Beyond vi
 a Dynnikov Coordinates
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Dynnikov coordinates give a combinatorial description of curv
 es on punctured disks\, where mapping class group actions are expressed 
 by piecewise-linear update rules. In this talk I use these coordinates t
 o study subgroups generated by relaxed curves. For configurations of rel
 axed curves with prescribed intersection properties I define regions in 
 the coordinate space and use them to implement a ping-pong argument for 
 freeness. We also get a refinement of a classical intersection-type ineq
 uality\, and a coordinate-based description of constructions of free and
  right-angled Artin subgroups. Carried out within TÜBİTAK project 123F
 221.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-15-gordanamatic-65jd8@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260515T113000
DTEND;TZID=Europe/Istanbul:20260515T123000
SUMMARY:Gordana Matić (University of Georgia) — Calculating Spectral O
 rder in Heegaard Floer Homology
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:We describe an invariant of contact structures in dimension t
 hree that arises as a refinement of the Ozsváth–Szabó contact class 
 in Heegaard Floer homology. This “spectral order” invariant takes va
 lues in the set of non-negative integers together with infinity. It is z
 ero for overtwisted contact structures\, and computable in a limit from 
 any supporting open book decomposition. It is nondecreasing under Legend
 rian surgery\, hence infinite for Stein-fillable contact structures\, so
  finiteness of the invariant is an obstruction to Stein fillability. We 
 give some examples and describe an algorithm to compute the spectral ord
 er associated to a given open book and a basis of arcs on the page. Join
 t work with Çağatay Kutluhan\, Jeremy Van Horn-Morris and Andy Wand.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-15-inapetkova-fasgxq@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260515T100000
DTEND;TZID=Europe/Istanbul:20260515T110000
SUMMARY:Ina Petkova (Dartmouth College) — An Introduction to Knot Floer
  Homology
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Background talk. Knot Floer homology is a powerful invariant 
 of knots and links\, developed by Ozsváth and Szabó in the early 2000s
 . Among other properties it detects the genus\, detects fiberedness\, an
 d gives a lower bound to the 4-ball genus. The original definition invol
 ves counting holomorphic curves in a high-dimensional manifold\, and as 
 a result the invariant can be hard to compute. In 2007 Manolescu\, Ozsv
 áth and Sarkar came up with a purely combinatorial description for knot
 s in the 3-sphere\, called grid homology. I will sketch the original con
 struction\, then discuss grid homology in greater detail.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-15-mustafakorkmaz-c4dseo@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260515T143000
DTEND;TZID=Europe/Istanbul:20260515T153000
SUMMARY:Mustafa Korkmaz (Middle East Technical University) — Low-dimens
 ional linear representations of mapping class groups
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:One of the central unsolved problems in the theory of mapping
  class groups is the existence of a faithful linear representation into 
 the general linear group of an n-dimensional complex vector space. For a
 n orientable surface of genus g there is a well-known symplectic represe
 ntation of dimension 2g. I will discuss: that any representation of dime
 nsion less than 2g is trivial\; that up to conjugacy the symplectic repr
 esentation is the unique nontrivial linear representation in dimension 2
 g\; that there is no faithful linear representation in dimensions less t
 han 4g−3\; and the classification of representations in dimension 2g+1
 .
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-aleksandramarinkovic-x9s7by@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T100000
DTEND;TZID=Europe/Istanbul:20260516T110000
SUMMARY:Aleksandra Marinković (University of Belgrade) — Concave conta
 ct structures on linear plumbings and generalisations
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:I will first recall the plumbing construction of 4-manifolds 
 according to the associated plumbing graphs — introduced in the 1960s 
 by Milnor and Wall\, and later developed by Hirzebruch\, Neumann and oth
 ers — then explain how to impose a symplectic structure with a contact
  type boundary on these manifolds. When all base surfaces are spheres an
 d the plumbing is linear\, I will show that if at least one self-interse
 ction number of base spheres is non-negative\, the plumbing admits a str
 ucture of a symplectic toric manifold with a concave contact boundary. J
 oint work with Jo Nelson\, Ana Rechtman\, Laura Starkston\, Shira Tanny 
 and Luya Wang.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-andywand-1xfg8xf@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T143000
DTEND;TZID=Europe/Istanbul:20260516T153000
SUMMARY:Andy Wand (University of Glasgow) — Positivity and Stein fillab
 ility of contact 3-manifolds
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:We will discuss motivation for and approaches to the question
  of when the monoid in the mapping class group of a surface with boundar
 y corresponding to monodromies of open book decompositions of Stein fill
 able contact 3-manifolds differs from the monoid of mapping classes whic
 h admit factorisations into positive Dehn twists. Combining recent resul
 ts with previous work of several people\, we give a complete solution\, 
 showing that the monoids coincide only for planar surfaces. Joint work w
 ith Vitalijs Brejevs.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-bulenttosun-7iv0c5@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T113000
DTEND;TZID=Europe/Istanbul:20260516T123000
SUMMARY:Bülent Tosun (University of Alabama) — On Weinstein domains in
  symplectic manifolds
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:I will focus on the topology of contact type hypersurfaces in
  symplectic manifolds: given a symplectic manifold X\, which manifolds c
 an arise as contact type hypersurfaces in X? The situation in dimension 
 4 is expected to be significantly more constrained. I will report on rec
 ent joint work with T. Mark identifying an obstruction for a contact 3-m
 anifold to embed in certain closed symplectic 4-manifolds as the boundar
 y of a Weinstein domain\, and explore consequences for the symplectic to
 pology of such domains in small rational surfaces.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-emirgul-14yg4b7@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Emir Gül (Middle East Technical University) — Involution Gener
 ators for Big Mapping Class Groups
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. For surfaces of finite type the mapping class
  group is generated by finitely many Dehn twists and even by a small num
 ber of torsion elements. For infinite-type surfaces the group becomes Po
 lish and standard generating sets fail. We show that for n ≥ 16 the ma
 pping class group of the infinite-genus surface with n ends can be topol
 ogically generated by four involutions\, and that those of the Loch Ness
  Monster and Jacob's Ladder surfaces can be generated by three. Joint wo
 rk with Tülin Altunöz\, Celal Can Bellek\, Mehmetcik Pamuk and Oğuz Y
 ıldız.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-hasansuluyer-a39mc7@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Hasan Suluyer (Middle East Technical University) — On Conic-Lin
 e Curves of Special Pencils
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. A pencil is a line in the projective space of
  homogeneous polynomials of degree d > 2. The number m of curves whose i
 rreducible components are only lines plays an important role for the exi
 stence of (m\, d)-nets\, and m cannot exceed 4. I establish an upper bou
 nd showing that m ≤ 6 for conic-line curves\, and conjecture that for 
 large d the number must be at most 4.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-jeronimogarciamejia-d6x09g@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Jerónimo García-Mejía (University of Warwick) — No distortio
 n allowed: Mapping class groups\, Out(Fn)\, and beyond
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. The study of mapping class groups of finite-t
 ype surfaces has long inspired work on the outer automorphism groups of 
 free groups. One shared feature is that their simplest subgroups\, gener
 ated by a single infinite-order element\, are undistorted. Out(Fn) is pa
 rt of the broader family of outer automorphism groups of right-angled Ar
 tin groups. We prove that in this setting too\, cyclic subgroups remain 
 undistorted. Work in progress with Ric Wade.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-livioferretti-12hc4of@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Livio Ferretti (University of Glasgow) — Invariant framings for
  fibred links
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. We introduce the notion of an invariant frami
 ng for a fibred link — a nowhere-vanishing vector field on the fibre s
 urface invariant under the action of the monodromy — and state some pa
 rtial results and open questions concerning the existence of such framin
 gs.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-manousosmanouras-dh3mjm@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Manousos Manouras (Nantes Université) — Twisted Alexander poly
 nomials of plane algebraic curves
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. The topology of plane algebraic curves was in
 itiated by Enriques and Zariski. Twisted Alexander polynomials provide a
 n accessible invariant of the fundamental group of the complement. We st
 udy them for reducible nonabelian SL₂(C) representations\, describing 
 a geometric parametrisation of all such reducible families as projective
  varieties whose dimensions are governed by characteristic varieties.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-nursaglam-rz8ief@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Nur Sağlam (University of Georgia) — Contact τ-Invariant for 
 dual knots
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. The Heegaard Floer τ-invariant is a knot con
 cordance invariant bounding the 4-ball genus\, defined by Ozsváth and S
 zabó. We aim to compute the contact τ-invariant for dual knots: given 
 a Legendrian knot L in S³ with the standard contact structure and (Y\, 
 ξ) obtained by Legendrian surgery on L\, to calculate the τ-invariant 
 of the dual knot in terms of the smooth τ-invariant and the surgery inf
 ormation. Joint work with Katherine Raoux.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-oguzsavk-ujydbs@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Oğuz Şavk (Middle East Technical University) — Every negative
  amphichiral knot is rationally slice
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. Kawauchi proved that every strongly negative 
 amphichiral knot is rationally slice\, while Hartley showed that not all
  negative amphichiral knots are strongly negative amphichiral. We extend
  Kawauchi's result by proving that every negative amphichiral knot is ra
 tionally slice\, using a careful analysis of the JSJ decompositions of t
 heir knot complements. Joint work with Alessio Di Prisa and Jaewon Lee.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-rohansureshmahure-8t9gev@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Rohan Suresh Mahure (Indian Institute of Science Education and Re
 search Bhopal) — Pseudo-Anosov-like maps on the infinite ladder surfac
 e
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. Let S_g be the closed surface of genus g and 
 L the infinite Jacob's ladder surface. We show the existence of pseudo-A
 nosov-like maps on L arising as lifts of Penner-type pseudo-Anosov maps 
 on S_g\, and establish that these lifts are topologically transitive\, m
 ixing\, and support null recurrent dynamics.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-salihakvanc-5ixz5n@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Saliha Kıvanç (Hacettepe University) — Legendrian Non-simple 
 Knots: The Case of Whitehead Doubles
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. This talk focuses on Whitehead doubles of the
  trefoil knot and demonstrates their non-simplicity: knots sharing the s
 ame classical invariants can still be distinct. The distinction is detec
 ted using the LOSS invariant from knot Floer homology.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-16-seymakaradereli-12e5kpn@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260516T160000
DTEND;TZID=Europe/Istanbul:20260516T170000
SUMMARY:Şeyma Karadereli (Boğaziçi University) — Real Algebraic Over
 twisted Contact Structures on 3-Sphere
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:Lightning talk. A real algebraic link in the 3-sphere is the 
 zero locus of a real algebraic function from R⁴ to R² with an isolate
 d singularity at the origin\; a real algebraic open book decomposition i
 s the Milnor fibration of such a function. I will present our recent res
 ult that every overtwisted contact structure on the 3-sphere with positi
 ve d₃ invariant is real algebraic\, with the pages of the associated o
 pen books being planar.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-17-inapetkova-5lf6io@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260517T113000
DTEND;TZID=Europe/Istanbul:20260517T123000
SUMMARY:Ina Petkova (Dartmouth College) — GRID Invariants Generalizatio
 ns and Lagrangian Cobordisms
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:In 2006 Ozsváth\, Szabó and Thurston defined invariants of 
 Legendrian knots using grid homology. I will describe various generalisa
 tions of these GRID invariants and use them to obstruct decomposable Lag
 rangian cobordisms in the symplectisation of the standard contact struct
 ure. Based on collaborations with Jubeir\, Schwartz\, Winkeler and Wong\
 ; Lewis\, Ojakli and Shapiro\; and Wong.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-05-17-oykuyurttas-698y5u@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260517T100000
DTEND;TZID=Europe/Istanbul:20260517T110000
SUMMARY:Öykü Yurttaş (Boğaziçi University and Dicle University) — 
 Fast computations for pseudo-Anosov mapping classes
LOCATION:Anderson Hall TB 310\, Boğaziçi University
DESCRIPTION:We present a quadratic-time algorithm for computing the stret
 ch factor and invariant measured foliations of a pseudo-Anosov mapping c
 lass given as a word in the generators\, in joint work with Margalit\, S
 trenner and Taylor. This gives the first sub-exponential time algorithm 
 for the problem. We also introduce a tropical Laurent polynomial represe
 ntation of the mapping class group of a punctured surface\, developed wi
 th Alessandrini\, via explicit formulae describing the action of each ge
 nerator in terms of normal coordinates.
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-10-20-cemyalmozel-1en5r1p@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251020T150000
DTEND;TZID=Europe/Istanbul:20251020T160000
SUMMARY:Cem Yalım Özel (Boğaziçi University) — Morse cohomology wit
 h support I
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-11-03-cemyalmozel-11m61e1@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251103T150000
DTEND;TZID=Europe/Istanbul:20251103T160000
SUMMARY:Cem Yalım Özel (Boğaziçi University) — Morse cohomology wit
 h support II
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-11-17-oykuyurttas-1d2cd66@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251117T150000
DTEND;TZID=Europe/Istanbul:20251117T160000
SUMMARY:Öykü Yurttaş (Boğaziçi University and Dicle University) — 
 Counting components of a multicurve
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-12-15-oliverbultel-11pldqh@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251215T150000
DTEND;TZID=Europe/Istanbul:20251215T160000
SUMMARY:Oliver Bültel (Boğaziçi University) — More PEL moduli spaces
  without points in characteristic 0
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-11-13-yuangao-1dx46p4@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251113T100000
DTEND;TZID=Europe/Istanbul:20251113T110000
SUMMARY:Yuan Gao (Nanjing University) — Local-to-global mirror symmetry
 : a new look at a classical example
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-11-28-mohanbhupal-1qzq9un@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251128T100000
DTEND;TZID=Europe/Istanbul:20251128T110000
SUMMARY:Mohan Bhupal (Middle East Technical University) — Sections of r
 ational elliptic Lefschetz fibrations
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-12-05-burakozbagc-avdb9n@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251205T100000
DTEND;TZID=Europe/Istanbul:20251205T110000
SUMMARY:Burak Özbağcı (Koç University) — Symplectic rational homolo
 gy ball fillings of Seifert fibered spaces
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2025-12-19-yanklekili-1az9nwt@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20251219T100000
DTEND;TZID=Europe/Istanbul:20251219T110000
SUMMARY:Yankı Lekili (Imperial College London) — A new order associate
 d with terminal threefold singularities via mirror symmetry
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-03-06-craigvancoevering-1cb6yw3@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260306T100000
DTEND;TZID=Europe/Istanbul:20260306T110000
SUMMARY:Craig van Coevering (Boğaziçi University) — Extremal Kähler 
 metrics and the moment map
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-03-13-salihakvanc-yqn9ru@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260313T100000
DTEND;TZID=Europe/Istanbul:20260313T110000
SUMMARY:Saliha Kıvanç (Hacettepe University) — Legendrian simplicity 
 through knot Floer homology
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-04-03-oguzsavk-1iwk7nb@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260403T100000
DTEND;TZID=Europe/Istanbul:20260403T110000
SUMMARY:Oğuz Şavk (Middle East Technical University) — On the homolog
 y cobordism group and Seifert fibered manifolds
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
BEGIN:VEVENT
UID:2026-04-10-baharacu-16570wt@imbm.org.tr
DTSTAMP:20261014T044219Z
DTSTART;TZID=Europe/Istanbul:20260410T110000
DTEND;TZID=Europe/Istanbul:20260410T120000
SUMMARY:Bahar Acu (Boğaziçi University and Pitzer College) — Open boo
 k decompositions via Lefschetz-Bott fibrations
LOCATION:TB 130\, Boğaziçi University South Campus
URL:https://imbm.org.tr/archive.html
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR