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 PK5115, PrésidentKennedy 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 Kstability 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 4manifolds  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 4genera  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
Higherdimensional Arakelov inequalities and applications to hyperbolicity  talk  January 15, 2021 == Mario GarciaFernandez, 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 3manifolds 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 4manifolds  talk  October 16, 2020 == Yi Ni, CalTech
Seifert fibered surgeries on hyperbolic fibered knots  talk  October 9, 2020 == Christina TonnesenFriedman, Union College
SasakiEinstein metrics and the Iterated join  slides and talk  October 2, 2020 == Junyan Cao, Université de Nice
On the OhsawaTakegoshi extension theorem  talk  September 25, 2020 == Jonathan Johnson, University of Texas at Austin
BiOrderability and Pretzel Knots  talk  September 18, 2020 ==Carlo Scarpa, SISSA
The HitchincscK system  slides and talk  September 11, 2020 == Andrew Lobb, University of Durham
The rectangular peg problem
CIRGET Junior Seminar  Organized by Carlos Valero, Dominique RathelFournier 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
Quasilocal Mass in Spacetimes  September 30, 2020 == Carlos Valero, McGill
An Introduction to the Calderon Problem  September 23, 2020 == Dominique RathelFournier, Université de Montréal
From curves on surfaces to Lagrangian topology  September 16, 2020 == Simon Jubert, UQAM
A YauTianDonaldson 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 OregónReyes, UC Berkeley
Cubulated relatively hyperbolic groups and virtual specialness  March 17, 2021 == Sami Douba, McGill
Virtually unipotent elements of 3manifold 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 2dimensional 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 == JeanPhilippe 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
Nonorderability of random triangular groups by using random 3CNF formulas  November 25, 2020 == Mitul Islam, University of Michigan
Convex cocompact representations of 3manifold groups  November 18, 2020 == Piotr Przytycki, McGill University
Tail equivalence of unicorn paths  November 11, 2020 == Zachary Munro, McGill University
Biautomaticity of 2dimensional 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 FP_{2} 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 modp homology in higher rank lattices  September 9, 2020 == Sam Shepherd, University of Oxford
Quasiisometric 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 coorganized with Princeton/IAS, Tel Aviv and Paris.
ZOOM link: https://theias.zoom.us/j/97116147750?pwd=L2Fud1Y4Z2xsT3dhU2NrV0ZXd3lUQT09
 May 14, 2021 == Daniel ÁlvarezGavela, 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 ChiuTamarkin complex  April 9, 2021 == Sara Tukachinsky, IAS
Relative quantum cohomology and other stories  April 2, 2021 == Sheel Ganatra, USC
Categorical nonproperness 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 LargeScale 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, IMJPRG
Periodic Floer homology and the largescale 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
Nondisplaceable Lagrangian links in fourmanifolds  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)
DehnSeidel twist, C^{0} symplectic geometry and barcodes;
Floer Ktheory and exotic Liouville manifolds
3D convex contact forms and the Ruelle invariant  January 22, 2021 == Basak Gurel, University of Central Florida
Pseudorotations 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 == YuWei Fan (Berkeley), Surena Hozoori (Georgia Tech), Marcelo Atallah (Montreal)
Shifting numbers in triangulated categories;
Symplectic Geometry of Anosov Flows in Dimension 3 and BiContact Topology;
Hamiltonian notorsion  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 CapovillaSearle (Duke), Julian Chaidez (UCB)
Generating functions in Hamiltonian dynamics and symplecticcontact 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 C^{0} symplectic topology  October 2, 2020 == Dusa McDuff, Columbia
Embedding ellipsoids into the onepoint blowup of $\C P^2$  September 25, 2020 == Jun Zhang, Montreal
Triangulated persistence categories  September 18, 2020 == CheolHyun Cho, Seoul
Fukaya category for LandauGinzburg orbifolds and BerglundHübsch
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 201920

Mondays
1:00 PM == Working Group in lowdimensional topology
PK5675, UQAM. Organizer: Tyrone Ghaswala