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. As of May 8, 2020, the CIRGET Seminar meets virtually.
Zoom link: https://uqam.zoom.us/j/98999725241

  • May 14, 2021 == Ziwen Zhu, Peking University
    Equivariant K-stability and valuative criteria
  • May 7, 2021 == Tye Lidman, North Carolina State University
    TBA
  • April 30, 2021 == Wenhao Ou, Chinese Academy of Science
    Projective varieties whose tangent bundle contains certain positivity
  • April 23, 2021 == Johnny Nicholson, University College London
    Projective modules and exotic group presentations
  • April 9, 2021 == Marco Marengon, Max Planck Institute for Mathematics
    Relative genus bounds in indefinite 4-manifolds - talk
  • March 26, 2021 == Antonio Alfieri, UBC
    Symmetric knots and Floer homologies - talk
  • March 19, 2021 == Philipp Naumann, Universität Bayreuth
    Curvature formula for direct images of relative canonical bundles with a Poincaré type twist - slides and talk
  • March 12, 2021 == Anthony Conway, MIT
    Knotted surfaces with infinite cyclic knot group - talk
  • February 26, 2021 == Chris Kottke, New College of Florida
    Bigerbes and applications - slides and talk
  • February 19, 2021 == Michael Hallam, Oxford
    Stability of fibrations through geodesic analysis - slides and talk
  • February 12, 2021 == Allison Miller, Rice University
    Amphichiral knots with large 4-genera - talk
  • February 5, 2021 == Simone Diverio, Sapienza, Università di Roma
    Pointwise universal Gysin formulae and positivity of some characteristic forms - talk
  • January 29, 2021 == Tarik Aougab, Haverford College
    Statistics for random curves on surfaces - talk
  • January 22, 2021 == Yohan Brunebarbe, Université de Bordeaux
    Higher-dimensional Arakelov inequalities and applications to hyperbolicity - talk
  • January 15, 2021 == Mario Garcia-Fernandez, ICMAT, Madrid
    Gravitating vortices with positive curvature - slides and talk
  • December 11, 2020 == Matei Toma, Nancy
    Boundedness for sets of coherent analytic sheaves - talk
  • November 27, 2020 == Mykola Matviichuk, University of Toronto
    A local Torelli theorem for log symplectic manifolds - talk
  • November 20, 2020 == Neil Hoffman, Oklahoma State University
    Conjectures related to knot complement commensurability - talk
  • November 13, 2020 == Michelle Chu, University of Illinois, Chicago
    Prescribed virtual torsion in the homology of 3-manifolds- talk (part 1) et talk (part 2)
  • November 6, 2020 == Phillip Griffiths, IAS, University of Miami
    Some geometric applications of Hodge theory - slides and talk
  • October 30, 2020 == Hugues Auvray, Paris, Orsay
    Noyaux de Bergman sur les surfaces de Riemann épointées - slides and talk
  • October 23, 2020 == Aru Ray, MPIM, Bonn
    Embedding surfaces in 4-manifolds - talk
  • October 16, 2020 == Yi Ni, CalTech
    Seifert fibered surgeries on hyperbolic fibered knots - talk
  • October 9, 2020 == Christina Tonnesen-Friedman, Union College
    Sasaki-Einstein metrics and the Iterated join - slides and talk
  • October 2, 2020 == Junyan Cao, Université de Nice
    On the Ohsawa-Takegoshi extension theorem - talk
  • September 25, 2020 == Jonathan Johnson, University of Texas at Austin
    Bi-Orderability and Pretzel Knots - talk
  • September 18, 2020 ==Carlo Scarpa, SISSA
    The Hitchin-cscK system - slides and talk
  • September 11, 2020 == Andrew Lobb, University of Durham
    The rectangular peg problem

CIRGET Junior Seminar - Organized by Carlos Valero, Dominique Rathel-Fournier and Simon Jubert

This Seminar is organized by and for graduate students. It is held on Mondays from 4:00 to 5:00 PM.
Zoom Link: https://uqam.zoom.us/j/97486895845

  • March 8, 2021 == Damien Tageddine, McGill
    Noncommutative differential geometry of matrix algebras
  • February 15, 2021 == Haouri Benammar, UQAM
    Grothendiek group
  • February 1, 2021 == Erfan Nazari, McGill
    Poisson manifolds of compact types
  • November 25, 2020 == Michael Albanese, UQAM
    Almost Complex vs. Complex
  • October 21, 2020 == Aidan Lindberg, McGill
    Hodge Structures in Poisson and Noncommutative Geometry
  • October 14, 2020 == Quentin Karegar, Unidad Cuernavaca Instituto de Matemáticas
    A groupoid approach to orbifolds
  • October 7, 2020 == Bart Syroka, McGill
    Quasi-local Mass in Spacetimes
  • September 30, 2020 == Carlos Valero, McGill
    An Introduction to the Calderon Problem
  • September 23, 2020 == Dominique Rathel-Fournier, Université de Montréal
    From curves on surfaces to Lagrangian topology
  • September 16, 2020 == Simon Jubert, UQAM
    A Yau-Tian-Donaldson correspondence on toric Kahler manifolds

Geometric Group Theory Seminar - Organized by Sami Douba

The seminar is held on Wednesdays at 3:00 PM
Zoom ID: 989 1072 6246
Password: delta
Link: https://mcgill.zoom.us/j/98910726246?pwd=VHlzTzdTZGtqcHVuWGNKdys4d0FzQT09

  • April 7, 2021 == Joshua Frisch, California Institute of Technology
    The ICC property in random walks and dynamics
  • March 31, 2021 == Steve Trettel, Stanford
    Raymarching the Thurston geometries: visual intuition for geometric topology in 3 dimensions
  • March 24, 2021 == Eduardo Oregón-Reyes, UC Berkeley
    Cubulated relatively hyperbolic groups and virtual specialness
  • March 17, 2021 == Sami Douba, McGill
    Virtually unipotent elements of 3-manifold groups
  • March 10, 2021 == Carolyn Abbott, Columbia University
    Random walks and quasiconvexity in acylindrically hyperbolic groups
  • February 24, 2021 == Daniel Wise, McGill
    Complete square complexes
  • February 17, 2021 == Kevin Schreve, University of Chicago
    Generalized Tits conjecture for Artin groups
  • February 10, 2021 == Jingyin Huang, Ohio State University
    Measure equivalence rigidity of 2-dimensional Artin groups of hyperbolic type
  • February 3, 2021 == Anne Lonjou, University of Basel
    Action of the Cremona group on a CAT(0) cube complex.
  • January 27, 2021 == Jean-Philippe Burelle, Université de Sherbrooke
    Local rigidity of diagonally embedded triangle groups
  • January 20, 2021 == Anush Tserunyan, McGill University
    The structure of hyperfinite subequivalence relations of treed equivalence relations
  • January 13, 2021 == Florestan Brunck, McGill University
    Iterated medial subdivision in surfaces of constant curvature and applications to
    acute triangulations of hyperbolic and spherical simplicial complexes
  • December 2, 2020 == Damian Orlef, IMPAN
    Non-orderability of random triangular groups by using random 3CNF formulas
  • November 25, 2020 == Mitul Islam, University of Michigan
    Convex co-compact representations of 3-manifold groups
  • November 18, 2020 == Piotr Przytycki, McGill University
    Tail equivalence of unicorn paths
  • November 11, 2020 == Zachary Munro, McGill University
    Biautomaticity of 2-dimensional Coxeter groups
  • November 4, 2020 == Kathryn Mann, Cornell University
    Stability for hyperbolic groups acting on their boundaries
  • October 28, 2020 == Ian Runnels, University of Virginia
    RAAGs in MCGs
  • October 21, 2020 == Asaf Hadari, University of Hawaii at Manoa
    Mapping class groups that do not virtually surject to the integers
  • October 14, 2020 == Thomas Haettel, Université de Montpellier
    The coarse Helly property, hierarchical hyperbolicity, and semihyperbolicity
  • October 7, 2020 == Robert Kropholler, WWU Münster
    Groups of type FP2 over fields
  • September 30, 2020 == Duncan McCoy, UQAM
    Characterizing slopes for torus knots and hyperbolic knots
  • September 23, 2020 == Michael Lipnowski, McGill University
    Algorithms for building grids
  • September 16, 2020 == Mikołaj Frączyk, University of Chicago
    Growth of mod-p homology in higher rank lattices
  • September 9, 2020 == Sam Shepherd, University of Oxford
    Quasi-isometric rigidity of generic cyclic HNN extensions of free groups

Symplectic Seminar - Organized by: Octav Cornea and Egor Shelukhin

The seminar meets by ZOOM on Fridays at 9:15. The new Symplectic Zoominar is co-organized with Princeton/IAS, Tel Aviv and Paris.
ZOOM link: https://theias.zoom.us/j/97116147750?pwd=L2Fud1Y4Z2xsT3dhU2NrV0ZXd3lUQT09

  • May 14, 2021 == Daniel Álvarez-Gavela, MIT
    TBA
  • May 7, 2021 == Laura Starkston, UC Davis
    TBA
  • April 16, 2021 == Maxim Jeffs, Harvard; Côme Dattin, Nantes; Bingyu Zhang, Institut Fourier, Université Grenoble Alpes
    Mirror symmetry and Fukaya categories of singular varieties;
    Wrapped sutured Legendrian homology and the conormal of braids
    Capacities from the Chiu-Tamarkin complex
  • April 9, 2021 == Sara Tukachinsky, IAS
    Relative quantum cohomology and other stories
  • April 2, 2021 == Sheel Ganatra, USC
    Categorical non-properness in wrapped Floer theory
  • March 26, 2021 == Jesse Huang, UIUC; Shaoyun Bai, Princeton; Thomas Melistas, UGA
    Variation of FLTZ skeleta;
    SU(n)-Casson invariants and symplectic geometry
    The Large-Scale Geometry of Overtwisted Contact Forms
  • March 19, 2021 == Egor Shelukhin, Université de Montréal
    Lagrangian configurations and Hamiltonian maps
  • March 12, 2021 == Oleg Lazarev, Harvard
    Inverting primes in Weinstein geometry
  • March 5, 2021 == Sobhan Seyfaddini, IMJ-PRG
    Periodic Floer homology and the large-scale geometry of Hofer's metric on the sphere
  • February 26, 2021 == Sylvain Courte, Grenoble
    Twisted generating functions and the nearby Lagrangian conjecture
  • February 19, 2021 == Daniel Pomerleano, Boston
    Intrinsic mirror symmetry and categorical crepant resolutions
  • February 12, 2021 == Cheuk Yu Mak, Edinburgh
    Non-displaceable Lagrangian links in four-manifolds
  • February 5, 2021 == Baris Yusuf Kartal, Princeton
    Algebraic torus actions on Fukaya categories and tameness of change in Floer homology
    under symplectic isotopies
  • January 29, 2021 == Alexandre Jannaud (Sorbonne), Tim Large (MIT), Oliver Edtmair (Berkeley)
    Dehn-Seidel twist, C0 symplectic geometry and barcodes;
    Floer K-theory and exotic Liouville manifolds
    3D convex contact forms and the Ruelle invariant
  • January 22, 2021 == Basak Gurel, University of Central Florida
    Pseudo-rotations vs. rotations
  • January 15, 2021 == Lisa Jeffrey, University of Toronto
    Symplectic implosion
  • December 11, 2020 == Zhengyi Zhou, IAS, Princeton
    Hierarchies of contact manifolds via rational SFT
  • December 4, 2020 == Eva Miranda, Universitat Politècnica de Catalunya
    The singular Weinstein conjecture and the Contact/Beltrami mirror
  • November 27, 2020 == Yu-Wei Fan (Berkeley), Surena Hozoori (Georgia Tech), Marcelo Atallah (Montreal)
    Shifting numbers in triangulated categories;
    Symplectic Geometry of Anosov Flows in Dimension 3 and Bi-Contact Topology;
    Hamiltonian no-torsion
  • November 20, 2020 == Paul Biran, ETH, Zürich
    Persistence and Triangulation in Lagrangian Topology
  • November 13, 2020 == Nick Sheridan, Edinburgh
    Quantum cohomology as a deformation of symplectic cohomology
  • CIRGET
  • November 6, 2020 == Kai Cieliebak, Augsburg
    Secondary coproducts in Morse and Floer homology
  • October 30, 2020 == Simon Allais (ENS Lyon), Orsola Capovilla-Searle (Duke), Julian Chaidez (UCB)
    Generating functions in Hamiltonian dynamics and symplectic-contact rigidity;
    Weinstein handle decompositions of complements of toric divisors in toric 4 manifolds;
    ECH Embedding Obstructions For Rational Surfaces
  • October 23, 2020 == Michael Hutchings, Berkeley
    Examples related to Viterbo's conjectures
  • October 16, 2020 == Umut Varolgunes, Stanford
    Mirror symmetry for chain type polynomials
  • October 9, 2020 == Lev Buhovsky, Tel Aviv
    The Arnold conjecture, spectral invariants and C0 symplectic topology
  • October 2, 2020 == Dusa McDuff, Columbia
    Embedding ellipsoids into the one-point blowup of $\C P^2$
  • September 25, 2020 == Jun Zhang, Montreal
    Triangulated persistence categories
  • September 18, 2020 == Cheol-Hyun Cho, Seoul
    Fukaya category for Landau-Ginzburg orbifolds and Berglund-Hübsch
    homological mirror symmetry for curve singularities
  • September 11, 2020 == Vincent Colin, Nantes
    Reeb dynamics in dimension 3 and broken book decompositions
  • September 4, 2020 == Georgios Dimitroglou Rizell, Uppsala
    Hamiltonian classification and unlinkedness of fibres in cotangent bundles of Riemann surfaces

Working Groups 2019-20