Previous Seminars and Working Groups

Geometry and Topology Seminar

  • July 24, 2020 == Livio Liechti, Université de Fribourg
    Divide knots of maximal genus defect - slides and talk
  • July 17, 2020 == Joshua Howie, UC Davis
    Alternating genera of torus knots - talk
  • July 10, 2020 == Gabriele Mondello, Università di Roma, La Sapienza
    On spherical surfaces of genus 1 with 1 conical point - slides
  • July 3, 2020 == Nicolina Istrati, Tel Aviv University
    Variational problems in conformal geometry - slides and talk
  • June 26, 2020 == Martin Bobb, UT Austin
    Decomposition along flats for convex projective manifolds - talk
  • June 19, 2020 == Vaibhav Gadre, University of Glasgow
    Statistical hyperbolicity of Teichmuller spaces - slides and talk
  • June 12, 2020 == Eiji Inoue, Tokyo
    mu-cscK metrics and muK-stability of polarized manifolds - slides and talk
  • June 5, 2020 == Ben Weinkove, Northwestern
    The Chern-Ricci flow - slides and talk
  • May 29, 2020 == Lukas Lewark, Regensberg
    Squeezed knots - slides and talk
  • May 22, 2020 == Patrick Orson, Boston College
    Topologically embedding spheres in knot traces
  • May 15, 2020 == Ekatarina Amerik, Paris Sud and HSE Moscow
    Around the cone conjecture for hyperkähler manifolds - slides
  • May 8, 2020 == Henri Guenancia, CNRS, Toulouse
    Families of singular Kähler-Einstein metrics - slides
  • March 6, 2020 == Clayton McDonald, Boston College
    Doubly slice odd pretzel knots
  • February 21, 2020 == Artour Tomberg, University of Western Ontario
    Vector bundles on twistor spaces of hyperkähler manifolds
  • February 14, 2020 == Joel Kamnitzer, University of Toronto
    Symplectic duality and the Hikita Conjecture
  • February 7, 2020, 10:00 == Gavin Ball, CIRGET, UQAM
    Closed G2-structures inducing a conformally flat metric
  • January 31, 2020 == Michael Albanese, CIRGET, UQAM
    Almost Complex Structures on Rational Homology Spheres
  • January 24, 2020 == Michael Lipnowski, McGill
    The Seiberg-Witten equations and the length spectrum of hyperbolic three-manifolds
  • January 17, 2020 == Tyrone Ghaswala, CIRGET
    Infinite-type surfaces and the arcs that survive
  • December 6, 2019 == Lars Sektnan, Aarhus University
    Optimal symplectic connections on holomorphic submersions
  • November 29, 2019 == Thomas Hockenhull, University of Glasgow
    Koszul duality and Knot Floer homology
  • November 22, 2019, 10:00 == Ahmad Issa, UBC
    Embedding Seifert fibered spaces in the 4-sphere
  • November 22 2019 == Sungmo Kang, University of Texas at Austin
    Hyperbolic primitive/Seifert knots in the 3-sphere
  • November 8, 2019 == Andrei Moroianu, Paris 11
    Weakly complex homogeneous spaces
  • November 1, 2019 == Kenji Fukaya, Kyoto University
    Virtual fundamental chain and its application
  • October 18, 2019 == Fei Hu, Waterloo
    Dynamical degrees of self-maps on abelian varieties
  • October 11, 2019 == Maxence Mayrand, University of Toronto
    Symplectic reduction, GIT quotients, and Nahm’s equations
  • October 4, 2019, 10:00 ==Kang Zuo, Mainz
    A p-adic characterization of modular curves
  • October 4, 2019 == Georges Dloussky, Marseille
    Positive (1,1) currents on some non-Kähler compact complex surfaces
  • September 27, 2019 == Gerard Freixas, Institut de mathématiques de Jussieu
    On the BCOV invariant of Calabi-Yau manifolds
  • September 20, 2019, 10:00 == Michael Brandenbursky, Ben-Gurion University
    Fragmentation norm and relative quasimorphisms
  • September 20, 2019 == Jen Hom, Georgia Tech
    More concordance homomorphisms from knot Floer homology
  • September 13, 2019 == Artem Kotelskiy
    Immersed curves in Khovanov homology
  • September 13, 10:00 == Linh Truong, Institute for Advanced Study
    An infinite rank summand of the homology cobordism group
  • September 11, 2019 == Brendan Owens, University of Glasgow
    Embeddings of rational balls
  • September 9, 2019 == Mike Willis, UCLA
    Defining Khovanov homology and Rasumussen’s invariant in #r(S1 x S2)
  • September 6, 2019 == David Calderbank, Bath
    GL2 geometries and quaternionic manifolds with symmetry
  • September 6, 2019 at 10:00 == Ian Zemke, Princeton
    Ribbon concordances and knot Floer homology
  • August 23, 2019 == Shu-Cheng Chang, National Taiwan University
    Yau’s Uniformization Conjecture in Sasakian Manifolds
  • May 10, 2019 == Xi Chen, University of Alberta
    Rational curves on K3 surfaces
  • May 3, 2019 == Fangyang Zheng, Ohio State
    Strominger connection and pluriclosed metrics
  • April 26, 2019 == Carlo Gasbarri, Strasbourg
    Transcendental Liouville inequality and rational points on disks
  • April 12, 2019 == Peter Feller, ETH
    Moebius bands in B3xS1 and the square peg problem
  • March 29, 2019 == Eric Bahuaud, Seattle University
    Ricci flow of asymptotically hyperbolic metrics
  • March 22, 2019 == Liangming Shen, CIRGET
    The Kahler-Ricci flow with log canonical singularities
  • March 15, 2019 == Brent Pym, McGill
    Multiple zeta values in deformation quantization
  • February 22, 2019 == Jonah Gaster, McGill
    Computing discrete harmonic maps between hyperbolic surfaces
  • February 15, 2019, 10:00 == Brett Kotschwar, Arizona State University
    The determination of a shrinking Ricci soliton from its geometry at infinity
  • February 15, 2019 == Éveline Legendre, Toulouse
    L’invariant de Futaki et la fonctionnelle d’Einstein-Hilbert
  • Wednesday, February 6, 2019, 11h00 == Kiumars Kaveh, University of Pittsburgh
    Convexity in algebraic geometry and symplectic geometry
  • January 25, 2019 == Cyril Lecuire, Toulouse
    Représentations kleiniennes
  • January 18, 2019 == Duncan McCoy, UT Austin
    Dehn surgery on knots in S3
  • Wednesday, January 16, 2019, 11:00 == Julien Keller, Marseille
    Quantification géométrique et applications à différents problèmes de géométrie complexe
  • January 11, 2019 == Baptiste Chantraine, Nantes
    Sous-variétés lagrangiennes des variétés de Weinstein
  • January 11, 2019, 10:00 == Christine Guenther, Pacific University
    Convergence Stability of the Ricci Flow
  • December 14, 2018 == Frédéric Campana, Université de Lorraine, Nancy
    Criterion for algebraicity of foliations, applications
  • December 7, 2018 == Eric Woolgar, University of Alberta
    Conditions of curvature-dimension type in relativity and Lorentzian geometry
  • December 7, 2018, 10:00 == Marcin Sabok, McGill University
    Circle squaring and actions of Zn
  • November 30, 2018 == Charles Doran, University of Alberta
    Classification and Applications of K3 Surface Fibered Calabi-Yau Threefolds
  • November 16, 2018 == Joey van der leer Duran, University of Toronto
    Hodge decompositions for Lie algebroids on manifolds with boundary
  • November 9, 2018 == Daniel Alvarez-Gavela, IAS Princeton, The multi-parametric Reidemeister theorem and higher homotopy
    groups of the space of Legendrian knots in the standard contact 3-space
  • November 2, 2018 == Curtis Porter, North Carolina State
    Nondegeneracy in CR Geometry
  • October 12, 2018 == Georges Dloussky, Université Aix-Marseille
    How to prove the GSS conjecture?
  • October 5, 2018 == Dmitry Faifman, Université de Montréal
    Lipschitz-Killing curvatures in pseudo-Riemannian and contact manifolds
  • September 28, 2018 == Jeffrey Streets, University of California, Irvine
    Pluriclosed flow and geometrization of complex surfaces
  • September 27, 2018 == Casey Lynn Kelleher, Princeton
    Symplectic curvature flow revisited

Geometric Group Theory Seminar

  • March 25, 2020 == Sami Douba, McGill
    Finitely generated subgroups of compact Lie groups
  • March 18, 2020 == Merlione Incerti-Medici, Zurich
    Topologies and metrics on the Morse boundary
  • March 11, 2020 == Ilya Kapovich, Hunter College of CUNY
    Singularity properties of random free group automorphisms and of random trees in the boundary of Outer space
  • February 19, 2020 == James Farre, Yale University
    Hyperbolic volume and bounded cohomology
  • February 12, 2020 == Michał Marcinkowski, IMPAN
    Bounded cohomology of transformation groups
  • February 5, 2020 == Tyrone Ghaswala, Université du Québec à Montréal
    Promoting circular-orderability to left-orderability
  • January 29, 2020 == Rylee Lyman, Tufts University
    Train Tracks, Orbigraphs and CAT(0) Free-by-cyclic groups
  • January 22, 2020 == Damian Osajda, University of Wrocław
    Helly groups
  • January 15, 2020 == Dani Wise, McGill
    Intro to word-hyperbolic groups
  • January 8, 2020 == Abdalrazzaq Zalloum, Queen’s University
    Growth of stable subgroups in Morse-local-to-global groups
  • November 20, 2019 == Dani Wise, McGill University
    A vanishing result for the second L2-Betti number.
  • November 13, 2019 == Elizabeth Fields, University of Illinois at Urbana-Champaign
    Trees, dendrites, and the Cannon-Thurston map
  • November 6, 2019 == Jens Harlander, Boise State University
    Geometry and topology of labeled oriented trees.
  • October 30, 2019 == Nima Hoda, École normale supérieure
    Crystallographic Helly Groups
  • October 23, 2019 == Kasia Jankiewicz, University of Chicago
    Residual finiteness of three generator Artin groups
  • October 16, 2019 == Heejoung Kim, University of Illinois at Urbana-Champaign
    Algorithms detecting stability and Morseness for finitely generated groups
  • October 9, 2019 == Rémi Coulon, Institut de recherche mathématique de Rennes
    Twisted Patterson-Sullivan measure and applications to growth problems
  • October 2, 2019 == Catherine Pfaff, Queen’s University
    Typical trees: an Out(Fr) excursion
  • September 25, 2019 == Piotr Przytycki, McGill University
    Tits alternative in dimension 2
  • September 18, 2019 == Michael Brandenbursky, Ben-Gurion University
    Entropy, metrics and quasi-morphisms
  • September 11, 2019 == Daniel Woodhouse, University of Oxford
    Action rigidity of free products of hyperbolic manifold groups
  • April 10, 2019 == Leonid Potyagailo, Université de Lille
    Martin and Floyd boundaries of finitely generated groups
  • April 3, 2019 == Joshua Greene, Boston College
    On loops intersecting at most once
  • March 27, 2019 == Steven Boyer, UQAM
    Deforming foliations in branched covers and the L-space conjecture
  • 20 mars 2019 == Alexandre Martin, Heriot-Watt University
    The Tits alternative for two-dimensional Artin groups
  • March 13, 2019 == Piotr Przytycki, McGill University
    Torsion groups do not act on 2-dimensional CAT(0) complexes
  • March 6, 2019 == Doron Puder, Tel Aviv University
    Matrix integrals, graphs on surfaces, and mapping class group
  • February 27, 2019 == Sami Douba, McGill University
    2-Systems of arcs on spheres with prescribed endpoints
  • February 20, 2019 == Hugh Thomas, UQAM
    Parking functions via piecewise-linear transformations of Rm
  • February 6, 2019 == Zachary Munro, McGill
    Weak Modularity and Euclidean Buildings
  • January 30, 2019 == Dani Wise, McGill
    Bicollapsibility and groups with torsion
  • January 23, 2019 == Michael Lipnowski, McGill
    Geometry of the smallest 1-form Laplacian eigenvalue on hyperbolic manifolds
  • January 16, 2019 == Nima Hoda, McGill
    Constructing bisimplices
  • January 9, 2019 == Jonah Gaster, McGill
    Computing discrete harmonic maps between hyperbolic surfaces
  • December 12, 2018 == Jacek Świątkowski, University of Wrocław)
    Topological characterization of boundaries of free products of groups
  • Thursday, December 6, 2018, room 920 == Jingyin Huang, Ohio State University
    Quasi-isometric rigidity of 2-dimensional Artin groups
  • November 28, 2018 == Matthew Haulmark, Vanderbilt University
    Non-hyperbolic groups with Menger curve boundary
  • November 21, 2018 == Tomasz Prytuła, Max Planck Institute
    Classifying space for proper actions for groups admitting a strict fundamental domain
  • November 14, 2018 == Valentina Disarlo, Heidelberg University
    Cubical geometry in the polygonalization complex
  • November 7, 2018 == Timothée Marquis, Université Catholique de Louvain
    On geodesic ray bundles in buildings
  • October 31, 2018 == Ilya Gekhtman, University of Toronto
    Growth rates of invariant random subgroups in negative curvature
  • October 24, 2018 == Marcin Sabok, McGill University
    The Hrushovski property for hypertournaments and profinite topologies
  • October 17, 2018 == Camille Horbez, Université Paris-Sud
    Growth under automorphisms of hyperbolic groups
  • October 10, 2018 == Macarena Covadonga Robles Arenas, McGill University
    Measuring complexity of curves on surfaces
  • October 4, 2018, 16:00 == Ruth Charney, Brandeis University
    A geometric approach to Artin groups
  • October 3, 2018 == Daniel Woodhouse, Technion
    Revisiting Leighton’s graph covering theorem
  • September 26, 2018 == Giulio Tiozzo, University of Toronto
    Random walks and WPD actions
  • September 19, 2018 == Florestan Brunck, McGill University
    Non-Obtuse Dissection of Tetrahedra
  • September 12, 2018 == Yann Pequignot, McGill University
    An introduction to Borel chromatic numbers
  • September 5, 2018 == Damian Osajda, University of Wrocław
    Two-dimensional Artin groups and metric systolicity

Symplectic Seminar

  • July 24, 2020 == John Pardon, Princeton
    Pontryagin--Thom for orbifold bordism
  • July 17, 2020 == Yusuke Kawamoto (Paris); Shira Tanny (Tel Aviv); Javier Martínez-Aguinaga (Madrid)
    Homogeneous quasimorphism, C0-topology and Lagrangian intersection; Floer theory of disjointly
    supported Hamiltonians; Formal Legendrian and horizontal embeddings
  • July 10, 2020 == Peter Ozsvath, Princeton
    Knot Floer homology and bordered algebras
  • July 3, 2020 == Tara Holm (Cornell)/Ana Rita Pires(Edinburgh)
    Infinite staircases and reflexive polygons (Part of Ellipsoid day joint with
    Western Hemisphere Virtual Symplectic Seminar)
  • June 26 2020 == Ailsa Keating, Cambridge
    Distinguishing monotone Lagrangians via holomorphic annuli
  • June 19 2020 == Igor Uljarevic, Belgrade
    Exotic symplectomorphisms and contact circle action
  • June 12 2020 == Mark Mclean, SUNY, Stony Brook
    Floer Cohomology and Arc Spaces
  • June 5 2020 == Three short research talks
    See https://dms.umontreal.ca/~cornea/Seminar.html
  • May 29 2020 == Alex Oancea, Orsay, Paris
    Duality for Rabinowitz-Floer homology
  • May 22, 2020 == Denis Auroux, Harvard
    Mirrors of curves and their Fukaya categories
  • May 15, 2020 == Jo Nelson, Rice
    Reflections on Cylindrical Contact Homology
  • May 8, 2020 == Marco Mazzucchelli, ENS-Lyon
    Spectral characterizations of Besse and Zoll Reeb flows
  • May 1, 2020 == Alberto Abbondandolo, Bochum
    Zoll contact forms are local maximisers of the systolic ratio
  • April 24, 2020 == Lisa Traynor, Bryn Mawr
    The Geography of Immersed Lagrangian Fillings of Legendrian Submanifolds
  • April 17, 2020 == Nicholas Wilkins, Bristol
    Equivariant quantum operations and relations between them
  • April 10, 2020 == Leonid Polterovich, Tel Aviv
    Geometry of Quantum Uncertainty
  • April 3, 2020 == Daniel Cristofaro-Gardiner, IAS
    The simplicity conjecture
  • March 27, 2020 == Octav Cornea, Montreal
    Fragmentation pseudo-metrics and Lagrangian submanifolds
  • March 13, 2020 == Umut Varolgunes, Stanford
    Super-rigidity of skeleta associated to complements of symplectic divisors
  • February 28, 2020 == Egor Shelukhin, UdeM
    Smith theory in Floer homology, persistence, and dynamics
  • February 21, 2020 == Egor Shelukhin, UdeM
    Smith theory in filtered Floer homology
  • February 14, 2020 == Octav Cornea, UdeM
    Marked Lagrangian submanifolds and Fukaya categories
  • February 7, 2020 == Jean-Philippe Chassé, UdeM
    The topology of Lagrangian submanifolds calibrated by curvature
  • January 31, 2020 == Dustin Connery-Grigg, UdeM
    A Geometric Realization of the Hamiltonian Floer Complex for Surfaces
  • January 24, 2020 == Jun Zhang, CRM-UdeM
    Relative growth rate and contact Banach-Mazur distance
  • January 17, 2020 == Fabian Ziltener, Utrecht University
    Coisotropic submanifolds of symplectic manifolds, leafwise fixed points, and spherical nonsqueezing
  • November 8, 2019 == Richard Hind, Notre Dame
    Packing and squeezing Lagrangian tori
  • November 1, 2019 == Kenji Fukaya, Kyoto University
    Lagrangian Floer theory in the divisor complement
  • October 18, 2019 == Jun Zhang, CRM
    Shape invariant and coarse Banach-Mazur distance
  • October 11, 2019, 1:15 == Dmitry Faifman, CRM
    Holmes-Thompson intrinsic volumes and Finsler manifolds
  • October 4, 2019 == Xiudi Tang, Toronto
    Symplectic ray removal and its applications
  • September 26, 2019 == Pierre-Alexandre Mailhot, Université de Montréal
    The Calabi homomorphism and Lagrangian cobordisms
  • September 20, 2019 == Michael Usher, UGA
    Local rigidity and C0symplectic and contact topology
  • April 12, 2019 == Egor Shelukhin, Université de Montréal
    Viterbo conjecture revisited
  • April 5, 2019 == Emmanuel Giroux, UMI CNRS-CRM
    From Morse functions to symplectic Lefschetz fibrations on cotangent bundles
  • March 29, 2019 == Jeff Hicks, Berkeley
    Wall Crossing and Lagrangian Cobordisms
  • March 22, 2019 == Baptiste Chantraine, Nantes and UMI-CNRS
    Lagrangian cobordisms between Legendrian submanifolds and Lagrangian surgeries (continued)
  • March 15, 2019 == Nicholas Wilkins, Oxford/MIT
    Quantum and Floer Steenrod squares
  • March 1, 2019 == Baptiste Chantraine, Nantes and UMI-CNRS
    Lagrangian cobordisms between Legendrian submanifolds and Lagrangian surgeries
  • February 15, 2019 == Brent Pym, McGill
    Holonomic Poisson manifolds
  • February 8, 2019 == Basak Gurel, U Central Florida, Orlando
    Dynamics of Hamiltonian pseudo-rotations
  • February 1, 2019, 14:40 == Gael Meigniez, U de Bretagne-Sud
    A proof of the Mather-Thurston theorem
  • February 1, 2019 == Alexandre Perrier, Université de Montréal
    Lagrangian cobordism groups of surfaces of genus higher than one
  • January 25, 2019 == Egor Shelukhin, Université de Montréal
    Viterbo conjecture for Zoll symmetric spaces
  • December 7, 2018 == Alexandre Perrier, Université de Montréal
    Lagrangian cobordism groups of surfaces of genus higher than one
  • November 30, 2018 == Egor Shelukhin, Université de Montréal
    Viterbo conjecture for Zoll symmetric spaces
  • November 16, 2018 == Amiel Peiffer-Smadja, Nantes
    Functoriality of the Open-Closed map
  • November 9, 2018 == Caitlin Leverson, Georgia Institute of Technology
  • October 26, 2018 == Baptiste Chantraine, Nantes et UMI CNRS - CRM
    Categories associated to Legendrian links II
  • October 12, 2018, 14:35 == Jeremy Lane, University of Geneva
    Gelfand-Zeitlin, Ginzburg-Weinstein, and partial tropicalization
  • October 12, 2018, 13:30 == Dan Rutherford, Ball State University
    Immersed Lagrangian cobordisms and augmentations
  • September 28, 2018 == Michael Sullivan, UMASS Amherst and CRM
    Cellular contact homology, augmentations and generating families for Legendrian surfaces
  • September 21, 2018 == Baptiste Chantraine, Nantes et UMI CNRS - CRM
    Categories associated to Legendrian links

Working Groups 2018-19

  • Tuesdays
    10:00 - 12:00 == Working Group in low-dimensional topology
    PK-5675, UQAM. Organizers: Steven Boyer and Biji Wong
  • Mondays
    1:30 - 3:30 == Kähler Geometry Working Group
    PK-5675, UQAM. Organizer: Lars Sektnan