# Seminars and Working Groups

## Geometry and Topology Seminar - Organised by Vestislav Apostolov

**Normally the Seminar is held Fridays at 11:00 AM in room PK-5115, Président-Kennedy Building, UQAM. All changes are indicated.**

- May 10, 2019 == Sheng-Li Tan, East China Normal University

*Poincaré problem and Chern numbers of holomorphic foliations* - May 3, 2019 == Fangyang Zheng, Ohio State

*TBA* - April 26, 2019 == Carlo Gasbarri, Strasbourg

*TBA* - April 12, 2019 == Peter Feller, ETH

*TBA* - March 29, 2019 == Eric Bahuaud, Seattle University

*TBA* - 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 13, 2019, CANCELLED == Wenhao Ou, UCLA

*La géométrie birationnelle des variétés kaehleriennes* - 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 S*^{3} - 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 Z*^{n} - 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 - Organised by Macarena Covadonga Robles Arenas, Sami Douba, Nima Hoda, Piotr Przytycki, Daniel Wise

**Wednesdays at 3:00 PM, Burnside Hall, room 1104, McGill**

- 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 R*^{m} - 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 - Organised by: Octav Cornea and Egor Shelukhin

**The seminar meets on Fridays, from 1:40 to 2:40 at UQAM, room PK-5115. All changes are indicated.**

- 5 avril 2019 == Emmanuel Giroux, UMI CNRS-CRM

*TBA* - 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