Seminars and Working Groups

Geometry and Topology Seminar - Organized by Julien Keller and Duncan McCoy

Normally the Seminar is held Fridays at 11:00 AM in room PK-5115, Président-Kennedy Building, UQAM. All changes are indicated. To attend virtually, here is the link: https://uqam.zoom.us/j/98999725241

  • May 9, 2025 == Kuan-Hui Lee, Univ. of California, Irvine
    The stability of steady pluriclosed soliton
  • May 2, 2025 == François Nicoleau, Nantes
    Global counterexamples to uniqueness for a Calderón problem with smooth conductivities
  • April 25, 2025 == Richard Melrose, MIT
    Gluing and generalized products
  • April 11, 2025 == Mehdi Lejmi, CUNY
    Balanced HKT metrics
  • April 4, 2025 == Yannick Sire, Johns Hopkins University
    Harmonic maps between singular spaces
  • March 28, 2025 == Roberto Albesiano, Waterloo
    From division to extension
  • March 14, 2025 == Xi Chen, University of Alberta
    Cuspidal curves on K3 surfaces
  • March 7, 2025, 10:00 AM == Behrouz Taji, UNSW Sidney
    Boundedness results for families of non-canonically polarized varieties
  • February 21, 2025 == Ana Balibanu, Louisiana State University
    Transversal slices in quasi-Poisson manifolds
  • February 7, 2025 == Katherine Goldman, McGill
    Residual properties of 2-dimensional Artin groups
  • January 31, 2025 == Jean Pierre Mutanguha, McGill
    Canonically decomposing fibrations: 3-manifolds & groups
  • January 17, 2025 == Patricia Sorya, UQAM
    Borner les chirurgies de Dehn non caractérisantes non entières
  • January 10, 2025 == Chung-Ming Pan, UQAM
    Singular Gauduchon metrics and Hermite-Einstein problem on non-Kähler varieties
  • December 13, 2024 == Olivier Martin, IMPA
    Isotrivial Lagrangian fibrations of hyper-Kähler manifolds of K3^[n] and Kum_n type
  • December 6, 2024 == Caleb Jonker, University of Toronto
    Curvatures in generalized Kähler geometry
  • November 29, 2024 == Panos Dimakis, University of Maryland
    On a conjecture of Simpson
  • November 22, 2024 == Kathryn Mann, Cornell
    (bi)-Foliations of the plane and laminations of the circle
  • CANCELLED - November 15, 2024 == Yannick Sire, Johns Hopkins
    Geometric measure of nodal, critical and singular sets for solutions of degenerate equations
  • November 8, 2024 == Bruno de Oliveira, University of Miami
    Chern numbers ratios of surfaces with big cotangent bundle
  • October 25, 2024 == Freid Tong, University of Toronto
    Complete Calabi-Yau metrics and optimal transport problems
  • October 18, 2024 == Chris Kottke, New College of Florida
    Geometric analysis on quasi-fibered boundary (QFB) manifolds
  • October 4, 2024 == Julien Paupert, Arizona State University.
    Complex hyperbolic and projective deformations of Kleinian groups
  • September 27, 2024 == Nathaniel Sagman, Université du Luxembourg
    Labourie’s conjecture and Higgs bundles at high energy
  • September 13, 2024 == Frédéric Rochon, UQAM
    Warped quasi-asymptotically conical Calabi-Yau metrics
  • September 6, 2024 == Anna Parlak, UC Davis
    Faces of the Thurston norm ball dynamically represented by multiple distinct flows

Geometric Group Theory Seminar - Organized by William Chong, Chris Karpinski, Piotr Przytycki and Dani Wise

The seminar is held on Wednesdays at 4:00 PM in 920 Burnside Hall, McGill

  • April 9, 2025 == Othmane Oukrid, McGill University
    Odd Moebius—Kantor Ring Puzzles
  • April 2, 2025 == Arya Vadnere, University at Buffalo
    Gromov boundary of the Grand Arc Graph
  • March 26, 2025 == Nicholas Touikan, University of New Brunswick
    On the conjugacy separability of mapping tori of polynomially growing free group automorphisms
  • March 19, 2025 == Sam Fisher, University of Oxford
    Virtually free-by-cyclic RFRS groups
  • March 12, 2025 == Aranka Hrušková, Weizmann Institute of Science
    Asymptotically commuting measures share the Furstenberg-Poisson boundary
  • March 5, 2025 == Dani Wise, McGill
    A survey on the Kervaire-Laudenbach conjecture
  • February 26, 2025 == Piotr Przytycki, McGill
    A pair of Garside shadows
  • February 19, 2025 == Chris Karpinski, McGill
    Hyperfiniteness of boundary actions of graphical small cancellation groups
  • February 12, 2025 == Olga Kharlampovich, CUNY, Grad Center and Hunter College
    Effective Generalization of Hall’s Theorem for Limit Groups and Cube Complexes
  • February 5, 2025 == Christophe Hohlweg, UQAM
    Shi arrangements in Coxeter groups
  • January 29, 2025 == Koichi Oyakawa, Vanderbilt University
    Geometry and dynamics of the extension graph of graph product of groups
  • January 22, 2025 == Antoine Poulin, McGill
    Measure equivalence of Baumslag-Solitar groups & type III relations
  • January 15, 2025 == Maninder Dhanauta, McGill
    Virtual cactus group is virtually special compact
  • November 27, 2024 == William Chong, McGill
    Embedding Partial HNN Extensions in Ascending HNN Extensions
  • November 20, 2024 == Bratati Som, University at Buffalo-SUNY
    Acylindrical actions on trees and applications to the outer automorphism group of Baumslag-Solitar groups
  • November 13, 2024 == Daniel Wise, McGill
    A small contribution to the Kervaire conjecture
  • November 6, 2024 == Paige Hillen, UC Santa Barbara
    Latent symmetry of graphs and stretch factors in Out(Fn)
  • October 31, 2024 == Catherine Pfaff, Institute for Advanced Study & Queen’s University
    Train track automata for outer automorphisms of free groups and geodesics in outer space
  • October 23, 2024 == Amy Herron, University at Buffalo
    Triangle Presentations in ~A2 Bruhat-Tits Buildings
  • October 9, 2024 == Bojun Zhao, UQAM
    Reconstruction of Anosov flows from infinity
  • October 2, 2024 == Katherine Goldman, McGill University
    Curvature of Shephard groups
  • September 25, 2024 == Jean Pierre Mutanguha, McGill University
    The dynamics of free group endomorphisms
  • September 18, 2024 == Changjie Chen, Université de Montréal
    Morse functions on the moduli space of hyperbolic surfaces
  • September 11, 2024 == Zachary Munro, Technion - Israel Institute of Technology
    A Coarse Geometric Obstruction to Cubulation

CIRGET Junior Seminar - Organized by Giacomo Bascape, Egor Morozov, Kelvin Ritland and Chenxi Yin

The seminar is held on Wednesdays at 11:00 am, PK-5675, UQAM

  • April 9, 2025 == Giovanny Soto, UQAM
    Special metrics on toric manifolds arising from moment polytopes
  • March 26, 2025, 5pm == Benabida Abdou Oussama, UQAM
    Asymptotics for resolutions and smoothings of Calabi-Yau conifolds
  • February 19, 2025, 5pm == Denis Vinokurov, Université de Montréal
    Searching for Equivariant Harmonic Maps That Maximize Laplacian Eigenvalues on the Sphere
  • February 12, 2025 == Giacomo Bascape, UQAM
    Square and/or Rectangle PEG Problem
  • January 29, 2025 == Alexis Leroux-Lapierre, McGill
    Comparing two biperfect bases using category O
  • January 15, 2025 == Ruiran Sun, University of Toronto
    An introduction to Shafarevich’s conjecture
  • November 26, 2024 == Emanuele Ronda, UQAM
    Vanishing Theorems and application to positivity in Algebraic Geometry
  • November 5, 2024 == Habib Alizadeh, Université de Montréal
    A few topics in Symplectic Geometry
  • October 29, 2024 == Zakaria Baammi, Université de Montréal
    La chirurgie de Fintushel Stern sur une variété de dimension 4 le long d’un nœud K
  • October 22, 2024 == Bart Syroka, McGill
    Balanced metrics on 6-manifolds of cohomogeneity one
  • October 8, 2024 == Giacomo Bascape, UQAM
    3-manifolds and SU(2)-representations
  • October 1, 2024 == Xia Xiao, UQAM
    Canonical metrics (e.g., constant scalar curvature Kähler metrics) on Riemann surfaces

Algebraic Geometry Seminar - Organized by Brent Pym, Jake Levinson, Steven Lu and Joel Kamnitzer

The seminar is held on Wednesdays at 2:00 pm, PK-5675, UQAM

  • May 7, 2025 == Sylvester Zhang, University of Minnesota
    Affine Robinson-Schensted Correspondence and Affine Flag varieties
  • April 30, 2025 == Davood Nejaty, University of Melbourne
    A topological mirror symmetry for pairs of commuting Higgs fields
  • March 26, 2025 == Jonathan Boretsky, McGill University
    On two Notions of Flag Positivity
  • Thursday, March 6, 2025, 3:00 pm == Sándor Kovács, University of Washington
    KSB stability is automatic in codimension 3
  • February 19, 2025 == Ana Balibanu, Louisiana State University
    An analogue of Whittaker reduction for group-valued moment maps
  • February 5, 2025 == Rui Xiong, University of Ottawa
    Chern classes of subvarieties over partial flag varieties
  • January 22, 2025 == Vasily Krylov, Harvard University
    From geometric realizations of affine Hecke algebras to character formulas
  • January 8, 2025 == Joseph Helfer, Simons Center for Geometry and Physics
    The integral Chow ring of the moduli stack of compact type curves of genus 2
  • December 11, 2024 == Olivier Martin, IMPA
    The Xiao conjecture for surfaces fibered by trigonal genus 5 curves
  • December 4, 2024 == Marielle Ong, University of Toronto
    Parabolic Multiplicative Affine Springer Fibers
  • November 20, 2024 == Yu Li, University of Toronto
    Polynomial integrable systems from cluster structures
  • November 6, 2024 == Bruno de Oliveira, University of Miami
    Canonical singularities and surfaces with big cotangent bundle
  • October 30, 2024 == Dennis Gaitsgory, Max Planck Institute
    Algebro-geometric version of the Fargues-Scholze BunG
  • October 23, 2024 == Leonid Rybnikov, Université de Montréal
    Cactus flower curves, integrable systems, and crystals
  • October 9, 2024 == Jenna Rajchgot, McMaster University
    Determinants, Pfaffians, symmetric quivers, and symmetric varieties
  • September 25, 2024 == Artem Kalmykov, McGill University
    A tale of an R-matrix
  • September 11, 2024 == Mike Roth, Queen’s University
    r-point Seshadri constants and the solution to the symplectic packing problem for P1 x P1
  • September 4, 2024 == Tudor Pădurariu, CNRS-Université Pierre et Marie Curie-Université Paris Diderot
    Coherent sheaves on the commuting stack

Symplectic Seminar

The Symplectic Zoominar, co-organized with Princeton/IAS, Tel Aviv and Paris, meets on Fridays at 9:15. The local Symplectic seminar is held on Fridays at 1:30 PM at the CRM, room 4336.

  • October 11, 2024 == Adi Dickstein, Tel Aviv University
    Symplectic topology and ideal-valued measures
  • October 4, 2024 == Zihong Chen, MIT
    The exponential type conjecture for quantum connections
  • September 20, 2024 == Michael Brandenbursky, Ben-Gurion University
    The C0-gap between entropy-zero and autonomous Hamiltonian diffeomorphisms of surfaces

Working Group in complex geometry - Organized by Chung-Ming Pan

The working group meets Thursdays from 2:00 PM to 3:30 PM in PK-5675, UQAM