Previous Seminars and Working Groups
Geometry and Topology Seminar
- 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 - May 10, 2024 == Kai Zheng, University of Chinese Academy of Sciences
Analysis of complex Monge Ampere equation near singularities - April 19, 2024 == Andras Stipsicz, Hungarian Academy of Sciences
Exotic four-manifolds with cyclic fundamental group - April 12, 2024 == Xuemiao Chen, Waterloo
On Vafa-Witten equations over Kaehler manifolds - April 5, 2024 == Federico Salmoiraghi, Queen's
Foliations, contact structures and Anosov flows in dimension 3 - March 22, 2024 == Bin Guo, Rutgers
Geometric estimates in Kahler geometry - March 15, 2024 == Vamsi Pritham Pingali, Indian Institute of Science
Ampleness of vector bundles and canonical metrics (zoom talk): slides - February 16, 2024 == Connor Sell, UQAM
Cusps of Arithmetic Hyperbolic Manifolds - February 9, 2024 == Charles Cifarelli, UQAM
Steady gradient Kähler-Ricci solitons and Calabi-Yau metrics on Cn - February 2, 2024 == Chi Cheuk Tsang, UQAM
Motivations and progress on the Fried-Ghys conjecture - January 26, 2024 == Ethan Ross, University of Toronto
Reduction of Polarizations - January 12, 2024 == Benoit Charbonneau, Waterloo
Instantons symétriques - November 17, 2023 == Joe Boninger, Boston College
Twisted knots and the perturbed Alexander invariant - November 10, 2023 == Mike Wong, University of Ottawa
Knot Floer homology, barcodes, and primality - November 3, 2023 == Eva Miranda, Universitat Politècnica de Catalunya
The Weinstein conjecture, 44 years later - October 27, 2023, PK-5675 == Yann Rollin, Nantes
Moment maps in Symplectic geometry and applications to PL symplectic geometry - October 20, 2023 == Abdellah Lahdili, UQAM
The Einstein-Hilbert functional in Kähler and Sasaki geometry: slides - October 13, 2023 == Thomas Barthelmé, Queen's University
Group actions on bifoliated planes and classification of (pseudo)-Anosov flows in dimension 3 - October 6, 2023, 2:00 pm == Simone Gutt, Université Libre de Bruxelles
Around almost complex structures - October 6, 2023 == Claude LeBrun, Stony Brook
Gravitational Instantons, Weyl Curvature, and Conformally Kahler Geometry - September 29, 2023 == Tian-Jun Li, University of Minnesota
- September 22, 2023 == Masafumi Hattori, University of Kyoto
K-stability of CY fibrations over curves: notes - September 15, 2023 == Daniel Litt, University of Toronto
Hodge theory, braid groups, and some questions about 2x2 matrices - September 2, 2022, PK-5675 == Eric Finster, University of Birmingham
Homotopy Theory and Constructive Mathematics - talk - September 23, 2022 == Ruiran Sun, CIRGET
On slope and valuative K-semistability for big and nef birational divisors - September 30, 2022, PK-5675 == Mathieu Anel, Carnegie Mellon University
Introduction to non-separated topology - October 7, 2022 == Ronan Conlon, University of Texas at Dallas
Shrinking Kahler-Ricci solitons- talk - October 14, 2022 == Carlo Scarpa, CIRGET
Scalar curvature and deformations of complex structures - October 21, 2022 == Georg Biedermann, Universidad del Norte
Calculus in homotopy theory - October 28, 2022 == Clara Aldana, Universidad del Norte
Polyakov Formulas for conical singularities in two dimensions - talk - November 4, 2022 == Manh Tien Nguyen, Oxford
Monotonicity theorems and how to compare them - November 11, 2022 == Takahiro Aoi, Abuno High School
A conical approximation of constant scalar curvature Kähler
metrics of Poincaré type and log K-semistability - slides - November 18, 2022 == Victor Kalvin, Concordia and Dawson College
Determinants of Laplacians on compact surfaces with conical singularities - talk - November 25, 2022 == Marcin Sroka, CIRGET
Monge-Ampere equation in hypercomplex geometry - talk - December 9, 2022 == Sarah Collins, Georgia Tech
Homology cobordism and knot concordance - talk - December 16, 2022 == Paula Truöl, ETH Zurich
Strongly quasipositive knots are concordant to infinitely many strongly quasipositive knots - talk - January 20, 2023 == Yueqiao Wu, University of Michigan
A non-Archimedean characterization of local K-stability - January 27, 2023 == Shih-Kai Chiu, Oxford
Calabi-Yau manifolds with maximal volume growth - February 3, 2023 == Nick McCleerey, University of Michigan
Geodesic Rays in the Donaldson-Uhlenbeck-Yau Theorem - *CANCELLED* February 10, 2023 == Maxime Fortier Bourque, Université de Montréal
The systole of hyperbolic surfaces - February 17, 2023 == Maxime Fortier Bourque, Université de Montréal
The systole of hyperbolic surfaces - February 24, 2023 == Nathan Grieve, Carleton University /
Collège militaire royal / UQAM
On Harder-Narasimhan data and the Central Limit Theorem - March 10, 2023 == Maxence Mayrand, Université de Sherbrooke
Hyperkähler metrics via deformation theory - March 17, 2023 == Panagiotis Dimakis, Stanford
BAA branes on the Hitchin moduli space from solutions to the extended Bogomolny equations - March 24, 2023 == Tristan Ozuch, MIT
4-dimensional specific aspects of Ricci flows - slides - March 31, 2023 == Mihai Paun, Bayreuth
Infinitesimal extension of pluricanonical forms and injectivity - April 14, 2023 == Fraser Binns, Boston College
Almost L-space knots - April 21, 2023, 10:00 AM == Emily Cliff, Université de Sherbrooke
Smooth 2-groups and their principal bundles - April 21, 2023 == Alejandro Adem, NSERC
Minimal Euler Characteristics for Even-Dimensional Manifolds with Finite Fundamental Group - April 28, 2023, PK-5675 == Xiaojun Wu, Bayreuth
Compact Kähler threefold with nef anticanonical line bundle - slides - May 5, 2023 == Yoshinori Hashimoto, Osaka Metropolitan Univ
Uniform Hörmander estimates for flat nontrivial line bundles - May 12, 2023 == Simon Jubert, UQAM
Yau-Tian-Donaldson correspondence on a class of toric fibrations - September 17, 2021 == Alix Deruelle, Sorbonne Université
A relative entropy for expanders of the Ricci flow (joint work with Felix Schulze, Warwick University) - slides - September 24, 2021 == Xuwen Zhu, Northeastern University
Constant curvature conical metrics - slides and talk - October 1, 2021 == Alberto Cavallo, UQAM, PK-5115
Slice links and smooth 4-manifolds - October 8, 2021 == Michael Albanese, UQAM, PK-5675
The Yamabe Invariant of Complex Surfaces - October 15, 2021 == Peter Feller, ETH Zurich
Braids, quasimorphisms, and slice-Bennequin inequalities - slides and talk - October 22, 2021 == Yang Li, MIT
Metric SYZ conjecture - slides and talk - October 29, 2021 == Marco Golla, Nantes
3-manifolds that bound no definite 4-manifold - talk - November 5, 2021 at 11:30 == Sucharit Sarkar, UCLA
Mixed invariants in Khovanov homology for unorientable cobordisms - talk - November 12, 2021 == Ruadhai Dervan, Cambridge
Stability conditions for polarised varieties - talk - November 19, 2021 == Ya Deng, Université de Lorraine
Big Picard theorem for varieties admitting nilpotent harmonic bundles - talk - November 26, 2021 == Gilles Carron, Université de Nantes
Kato's Limits - slides and talk - December 3, 2021 == Steven Sivek, Imperial College
Small Dehn surgery and SU(2) - talk - December 10, 2021 == Nathan Grieve, RMC, Carleton
On topics that surround the Cone Theorem, K-stability and Diophantine Arithmetic Geometry - talk - December 17, 2021 == Adam Jacob, UC Davis
Special Lagrangian torus fibrations on Del Pezzo and Rational Elliptic Surfaces - talk - January 14, 2022 == Ethan Addison, University of Notre Dame
Generalizing Poincaré-Type Kähler Metrics - slides - January 21, 2022 == Francesco Lin, Columbia
Closed geodesics and Frøyshov invariants of hyperbolic three-manifolds - talk - January 28, 2022 == Xi Sisi Shen, Columbia
A Chern-Calabi flow on Hermitian Manifolds - slides and talk - February 4, 2022 == Michael Albanese, UQAM, PK-5115
Spinh and further generalisations of spin - February 11, 2022 == Kyle Hayden, Columbia
Where are the complex curves in Khovanov homology? - talk - February 18, 2022 == Ruiran Sun, CIRGET
Algebraicity of holomorphic maps to varieties with big representation of \(\pi_1\) - February 25, 2022 == Jacob Caudell, Boston College
Lens space surgeries, lattices, and the Poincaré homology sphere - talk - March 11, 2022 == Louis Ioos, Max Planck
Quantization methods in the Yau-Tian-Donaldson program - slides and talk - March 18, 2022 == Dennis The, UiT The Arctic University of Norway, PK-5115
Simply-transitive CR real hypersurfaces in \(C^3\) - March 25, 2022 == Tyrone Ghaswala, UQAM, PK-5115
Small covers of big surfaces - April 1, 2022 == Alan Reid, Rice University
Embedding and bounding geometrically rational homology 3-spheres - talk - April 8, 2022 == Allison Moore, Virginia Commonwealth
Cosmetic surgery, cosmetic crossings - talk - April 22, 2022 == Alexandre Girouard, Laval, PK-5675
Steklov eigenvalues, homogenization and free boundary minimal surfaces - April 29, 2022 == Jean-Philippe Burelle, Sherbrooke, PK-5675
Piecewise circular curves and flag positivity - talk - May 6, 2022 == Joel Kamnitzer, Toronto, PK-5675
Symplectic duality and affine Grassmannian slices - talk - May 27, 2022 == Aldo Witte, KU Leuven, PK-5675
Singular fibrations in toric and Poisson geometry - talk - May 14, 2021 == Ziwen Zhu, Peking University
Equivariant K-stability and valuative criteria - slides and talk - May 7, 2021 == Tye Lidman, North Carolina State University
SU(2) representations for toroidal homology spheres - talk - April 30, 2021 == Wenhao Ou, Chinese Academy of Science
Projective varieties whose tangent bundle contains certain positivity - slides and talk - April 23, 2021 == Johnny Nicholson, University College London
Projective modules and exotic group presentations - talk - 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 - 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
CIRGET Junior Seminar
- 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 - August 30, 2023 == Kasia Jankiewicz, University of California, Santa Cruz
Centers of Artin groups - October 3, 2022 == Houari Benammar, UQAM
Ruled Surface - October 17, 2022 == Patricia Sorya, UQAM
Dehn surgery characterization of satellite knots - February 7, 2023 == Federico Trinca, Oxford
On the stability of minimal submanifolds in conformal spheres - February 14, 2023 == Alex Manchester, Rice University
Satellite Operators and (n)-solvability - February 21, 2023 == Keith Mills, University of Maryland
Almost Complex Manifolds and Homotopy Projective Spaces - February 28, 2023 == Arno Wildi, Institut für Mathematik Universität Zürich
Categorification, a very general idea in mathematics - March 7, 2023 == Bangxin Wang, Institut für Mathematik Universität Zürich
An introduction to quantum topology - March 21, 2023 == Pietro Capovilla, Scuola normale di Pisa
Amenable covers and simplicial volume - March 28, 2023 == Kai Joel Smith, Indiana University
Character Varieties of Tangles and Singular Instanton Homology - April 4, 2023 == Alessio Di Prisa, Scuola Normale di Pisa
Equivariant concordance of strongly invertible knots - April 11, 2023 == Laura Wakelin, Imperial College
The Dehn surgery characterisation of Whitehead doubles - April 18, 2023 == Fraser Binns, Boston College
(1,1) (almost) L-space knots - March 16, 2022 == Paul Cusson, McGill University
Classifying vector bundle filtrations with infinite flag manifolds and other problems - CANCELLED - March 23, 2022 == Paul Cusson, McGill University
Classifying vector bundle filtrations with infinite flag manifolds and other problems II - March 30, 2022 == Lydia Mezrag, Université de Montréal
K-theory and Hamiltonian fibrations - April 6, 2022 == Chenxi Yi, UQAM
Introduction to the Yau-Tian-Donaldson Conjecture - April 13, 2022 == Ludovic D'Anjou Madoré, UQAM
Categorical Logic, Topos Theory and Applications - April 27, 2022 == Benabida Oussama, UQAM
Convergence of the Krylov Bogolyubov procedure in Bowen's example - May 18, 2022 == Ruiran Sun, McGill
Variation of Hodge structures on curves and Fujita decomposition - May 25, 2022 == Giacomo Bascape, UQAM
SU(2) representation of triangles group - 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
- 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 - April 10, 2024 == Merlin Medici, Universität Wien
Automorphism groups of cocompact CAT(0) cube complexes - March 27, 2024 == Indira Chatterji, Côte d'Azur University
The rapid decay property and graphs of groups - March 22, 2024 == Damian Osajda, University of Copenhagen
Locally elliptic actions and nonpositive curvature - March 20, 2024 == Nikolay Bogachev, University of Toronto
Commensurability classes and quasi-arithmeticity of hyperbolic reflection groups - March 13, 2024 == Annette Karrer, Ohio State University
Subgroups arising from connected components in the Morse boundary - February 28, 2024 == Rylee Alanza Lyman, Rutgers University-Newark
When is the spine of Outer Space for a free product CAT(0)? - February 21, 2024 == Sergey Norin, McGill
Brambles, stack number and topological overlap - February 14, 2024 == Steven Boyer, UQAM
Stir-frying Homeo_+(S^1)-representations and the L-space conjecture - January 31, 2024 == Rose Morris-Wright, Middlebury College
Geometric connections between Artin groups and Artin monoids - January 17, 2024 == Antoine Poulin, McGill
The failure of cost in the measure-class preserving setting - November 29, 2023 == Duncan McCoy, UQAM
Obstructing cusp types of arithmetic hyperbolic manifolds - November 22, 2023 == Nima Hoda, McGill
Tree of graph boundaries of hyperbolic groups - November 8, 2023 == Connor Sell, UQAM
Cusps of arithmetic hyperbolic manifolds - November 1, 2023 == Piotr Przytycki, McGill
Trees, fixed-points and the Cremona group - October 25, 2023 == Zachary Munro, McGill
Random Groups are not n-Cubulated - October 18, 2023 == Ran Tao, CMU
Quasi-treeable CBERs are treeable via median graphs - September 13, 2023 == Christopher Karpinski, McGill
A weak Tits alternative for groups acting on buildings - September 7, 2022 == Annette Karrer, McGill
The boundary rigidity of lattices in products of trees - September 14, 2022 == Sami Douba, IHES
A hyperbolic lattice in each dimension with Zariski-dense surface subgroups - September 21, 2022 == Thomas Haettel, U. Montpellier
Group actions on injective metric spaces - September 28, 2022 == Piotr Przytycki, McGill
Coxeter groups are biautomatic - October 5, 2022 == Chris Karpinski, McGill
Hyperfiniteness of the Action of Relatively Hyperbolic
Groups on their Bowditch Boundary - October 19, 2022 == Dani Wise, McGill
Magnus's Power Series Representation - October 26, 2022 == William Chong, McGill
pi1 Injection and Relative Hyperbolicity - November 2, 2022 == Brahim Abdenbi, McGill
The Hrushovski property for compact special cube complexes - November 9, 2022 == Zachary Munro, McGill
Strict C(6) Complexes - November 16, 2022 == Konrad Wrobel, McGill
Measure equivalence and wreath product groups - *Thursday* November 24, 2022 == Jean-Pierre Mutanguha, IAS
Canonical forms for free group automorphisms - November 30, 2022 == Duncan McCoy, UQAM
Seifert fibered surgeries - January 11, 2023 == Harry Petyt, Oxford
Extracting hyperbolicity from CAT(0) geometry - January 18, 2023 == Thomas Haettel, Montpellier
Garside Groups - January 25, 2023 == Annette Karrer, McGill
From Stalling's Theorem to Morse boundaries - February 1, 2023 == Max Chemtov, McGill
Nonpositive Towers in Contractible 3-Manifold Spines - February 8, 2023 == Piotr Przytycki, McGill
Tits alternative for the 3-dimensional tame automorphism group - February 15, 2023 == William Chong, McGill
Whitehead Graphs and Irreducible Half-clean HNN Extensions - February 22, 2023 == Rémi Coulon, Rennes
Equations in periodic groups - March 22, 2023 == Sam Fischer, Oxford
Algebraic fibring and L2-Betti numbers - March 29, 2023 == Grigori Avramidi, Max Planck Institute
Homology growth, hyperbolization, and fibering. - September 15, 2021 == Sami Douba, McGill University
Proper CAT(0) actions of unipotent-free linear groups - September 22, 2021 == Zachary Munro, McGill University
Hyperbolic groups and geometric group theory - September 29, 2021 == William Chong, McGill University
Small cancellation theory and word problems - October 6, 2021 == Catherine Pfaff, Queen's University
A Brief (Hopefully Gentle) Introduction to Out(F_r),
Culler-Vogtmann Outer Space, & Out(F_r) Conjugacy Class Invariants - Thursday, October 14, 2021 == Michah Sageev, Technion - Israel Institute of Technology
Right angled Coxeter groups acting on CAT(0) cube complexes. - October 20, 2021 == Daniel Wise, McGill
Complete Square Complexes - October 27, 2021 == Daniel Wise, McGill
Complete Square Complexes II - November 3, 2021 == William Chong, McGill
An uncountable family of finitely generated residually finite groups - November 10, 2021 == Daniel Wise, McGill
Introductory level talk on residual finiteness - November 17, 2021 == Tyrone Ghaswala, UQAM
Mapping class groups, coverings, braids and groupoids - November 24, 2021 == Alex Lubotzky, Hebrew Univ / Weizmann Institute / IAS
The C3 problem: error-correcting codes with a constant rate, constant distance, and constant locality - December 1, 2021 == Catherine Pfaff, Queen's University
Train (track)s, loops, & iteration. What does a typical element of Out(F_r) look like? - December 8, 2021 == Thomas Koberda, University of Virginia
Hamiltonicity of graphs via right-angled Artin groups - February 9, 2022 == Daniel Wise, McGill
Introductory level talk on residual finiteness continued - February 16, 2022 == Sami Douba, McGill
Thin right-angled Coxeter subgroups of some arithmetic lattices - February 23, 2022 == Daniel Wise, McGill
Introductory level talk on residual finiteness continued - March 9, 2022 == William Chong, McGill
One-relator Product of Cyclic Groups - March 16, 2022 == Daniel Wise, McGill
One-relator groups - March 23, 2022 == William Ghanem, McGill
CAT(0) Cube Complexes: The Dual Complex and Finiteness Properties - April 6, 2022 == Christopher Karpinski, McGill
The generalized conjugacy problem in hyperbolic and relatively hyperbolic groups - April 13, 2022 == Christopher Karpinski, McGill
The generalized conjugacy problem in hyperbolic and relatively hyperbolic groups II - 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 - 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
Algebraic Geometry Seminar
- May 28, 2025 == Pavel Shlykov, Edinburgh
Quiver varieties in dimension four - 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 - April 10, 2024 == Thomas Brazelton, Harvard
Real planar curves - algebraic, geometric, and topological aspects - March 27, 2024 == Chenxi Yin, UQAM
Valuative invariants for spherical varieties and applications to K-stability - March 13, 2024 == Maxence Mayrand, Université de Sherbrooke
Shifted coisotropics and Moore-Tachikawa topological quantum field theories - February 28, 2024 == Guillermo Gallego, Universidad Complutense de Madrid
Multiplicative Hitchin fibration and Langlands duality - February 14, 2024 == Steven Lu, UQAM
Hyperkahler manifolds dominable by Cn, Part II - January 31, 2024 == Steven Lu, UQAM
Hyperkahler manifolds dominable by Cn - January 17, 2024 == Michael Groechenig, University of Toronto
Topological properties of the Frobenius-pullback for flat connections - December 13, 2023 == Sam Payne, UT Austin
Tropical linear series and Kodaira dimensions of moduli spaces - November 29, 2023 == Changho Han, University of Waterloo
Extending Torelli map from Smyth's alternative compactifications of the moduli of curves - November 15, 2023 == Jake Levinson, Université de Montréal
Minimal fibering degrees and asymptotic degrees of irrationality - October 3, 2023 == Dave Anderson, Ohio State University/CRM-Simons
Schubert polynomials, strong transversality, and equivariant positivity - September 20, 2023 == Mykola Matviichuk, Imperial College London
Elliptic Log Symplectic Brackets on Projective Bundles - September 19, 2023 == Karol Palka, Institute of Mathematics, Polish Academy of Sciences
Almost minimal models and applications - September 5, 2023 == Kang Zao, Universität Mainz
On the rigidity and hyperbolicity of families of higher dimensional varieties - September 23, 2022 == Ruxandra Moraru, University of Waterloo
Co-Higgs bundles on Poisson surfaces - October 7, 2022 == Carl Mautner, UC Riverside
Perverse sheaves on symmetric products of the plane - October 21, 2022 == Sam Payne, UT Austin
Cohomology of moduli spaces of curves - November 4, 2022 == Ruiran Sun, McGill
One-pointed Shafarevich's conjecture for moduli spaces
of canonically polarized manifolds - November 18, 2022 == Eric Boulter, Waterloo
Moduli Spaces of Sheaves on Kodaira Surfaces - January 13, 2023 == Tony Pantev, University of Pennsylvania
Mirror symmetry, intersection of quadrics, and Hodge theory - January 27, 2023 == Lucien Hennecart, University of Edinburgh
The BPS Lie algebra of 2-Calabi-Yau categories - February 10, 2023 == Soheil Memarian, University of Toronto
Hyperbolicity of Complex Ball Quotients - February 24, 2023 == Nathan Grieve, Carleton University /
Collège militaire royal / UQAM
On convex bodies for linear systems and consequences for K-stability and arithmetic - March 10, 2023 == Jacques Hurtubise, McGill
Almost toric structures for moduli of bundles - March 24, 2023 == Ramtin Sasani, Concordia
Symplectic aspects of Gaudin integrable systems and Szegö kernel variational method - *May 10, 2023, 3:00 PM* Please note the unusual day and time == Clément Dupont, Université de Montpellier
Motivic Galois theory for algebraic Mellin transforms and Feynman integrals
Symplectic Seminar
- 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 - October 8, 2021 == Jean-Philippe Chassé, UdeM; Leo Digiosia, Rice; Rima Chatterjee, Cologne
Convergence and Riemannian bounds on Lagrangian submanifolds;
Cylindrical contact homology of links of simple singularities;
Cabling of knots in overtwisted contact manifolds - October 15, 2021 == Umberto Hryniewicz, RWTH Aachen
Results on abundance of global surfaces of section - October 22, 2021 == Yaniv Ganor, Technion
Big fiber theorems and ideal-valued measures in symplectic topology - October 29, 2021 == Yakov Eliashberg, Stanford
Detecting non-trivial elements in the spaces of Legendrian knots via Algebraic K-theory - November 5, 2021 == Rohil Prasad, Princeton; Alex Pieloch, Columbia; Jimmy Chow, CUHK
The smooth closing lemma for area-preserving surface diffeomorphisms;
Sections and unirulings of families over the projective line;
Hofer geometry of coadjoint orbits and Peterson's theorem - November 19, 2021 == Fabio Gironella, HU Berlin
Exact orbifold fillings of contact manifolds - November 26, 2021 == Mohammed Abouzaid, Columbia
Complex cobordism and Hamiltonian fibrations - December 10, 2021 == Urs Frauenfelder, Augsburg
GIT quotients and symplectic data analysis - December 17, 2021 == Wenyuan Li, Northwestern; Jakob Hedicke, Bochum; Johan Asplund, Uppsala
Estimating Reeb chords using microlocal sheaf theory;
Lorentzian distance functions on the group of contactomorphisms;
Simplicial descent for Chekanov-Eliashberg dg-algebras - January 14, 2022 == Michael Sullivan, UMass Amherst
Quantitative Legendrian geometry - January 21, 2022 == Susan Tolman, UIUC
Beyond semitoric - January 28, 2022 == Dustin Connery-Grigg, UdeM; Pazit Haim-Kislev, Tel Aviv; Thibaut Mazuir, Paris
Geometry and topology of Hamiltonian Floer complexes in low-dimension;
Symplectic capacities of p-products;
Higher algebra of A-infinity algebras in Morse theory - February 11, 2022 == Ely Kerman, UIUC
On symplectic capacities and their blind spots - February 18, 2022 == Umut Varolgunes, Boğaziçi
TBA - February 25, 2022 == Erman Cineli, Paris
TBA - March 4, 2022 == Marie-Claude Arnaud, Paris
TBA - May 14, 2021 == Daniel Álvarez-Gavela, MIT
Caustics of Lagrangian homotopy spheres with stably trivial Gauss map - May 7, 2021 == Laura Starkston, UC Davis
Unexpected fillings, singularities, and plane curve arrangements - 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 - 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
Category Theory Seminar
- January 23, 2023 == Ludovic D'Anjou-Madore, UQAM
Catégories de flèches et adjonctions - February 6, 2023 == Ludovic D'Anjou-Madore, UQAM
Catégories de flèches et adjonctions II, (un) théorème de Lawvere - February 20, 2023 == Ludovic D'Anjou-Madore, UQAM
Yoneda, densité et cocomplétion libre - March 6, 2023 == Marc-André Brochu, UQAM
Limites et Colimites - March 20, 2023 == Marc-André Brochu, UQAM
Limites et Colimites II - April 17, 2023 == Benjamin Dequêne, UQAM
Les complexes simpliciaux - May 1, 2023 == Ludovic D'Anjou-Madore, UQAM
Constructions élémentaires dans les ensembles simpliciaux
Working Groups 2024-25
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
Working Groups 2021-22
Working Group in Low-dimensional Topology - Organized by Tyrone Ghaswala
The working group is held on Mondays at 3:00 PM in PK-5675, UQAM
Working Group in Algebraic and Differential Geometry - Organized by Nathan Grieve, Steven Lu and Julien Keller
The working group is held on Thursdays at 12:30 PM in PK-5675, UQAM
- December 9, 2021 == Steven Lu, UQAM
On the moduli of elliptic curves - December 16, 2021 == Xuankien Phung, UQAM
On Parshin-Arakelov theorem and uniformity of integral sections on elliptic surfaces - January 20, 2022 == Ruiran Sun, McGill
An introduction to non-abelian Hodge theory - January 27, 2022 == Xia Xiao, UQAM
Siu's invariance of plurigenera - February 2, 2022 == Ariyan Javanpeykar, Johannes Gutenberg Universität
On Shafarevich's theorem - February 10, 2022 == Michael Albanese, UQAM
Almost Complex Structures on Four-Manifolds - February 17, 2022 == Houari Benammar, UQAM
An introduction to the notion of singular hermitian metric and positivity
of the direct image of twisted relative canonical bundle - March 10, 2022 == Nathan Grieve, RMC, Carleton
About Fourier transform techniques for derived categories and Chow rings of Abelian varieties - March 1, 2022 == Behrouz Taji, UNSW Sydney
Shafarevich conjecture; Hodge theory meets birational geometry and moduli - March 24, 2022 == Frédéric Rochon, UQAM
On Donaldson's theorem describing the moduli space of SU(2) monopoles on R3 - March 31, 2022 == Dan Popovici, Toulouse
Two Notions of Hyperbolicity For Compact Complex Manifolds in Complex Codimension One
Working Groups 2019-20
-
Mondays
1:00 PM == Working Group in low-dimensional topology
PK-5675, UQAM. Organizer: Tyrone Ghaswala
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