Winter 2023 Time: Monday, 16:30 - 17:30 (EST) Place: Room 222, Jeffery Hall Date Speaker Title April 17 Lucas Gagnon (York University) Quasisymmetric varieties, excedance classes, and bases for the Temperley--Lieb algebra April 11 (Time: 13:00 - 14:00) Rita Fioresi (University of Bologna) On generalized root systems April 10 Easter Monday No Talk April 3 Gregory G. Smith (Queen's University) Cohomology of toric vector bundles March 27 David Wehlau (Royal Military College & Queen's University) Rings of invariants of Finite Classical Groups March 21 (Time: 13:00 - 14:00) Francis Bischoff (University of Oxford) The derived moduli stack of logarithmic flat connections March 20 Alexandre (Sasha) Zotine (Queen's University) Kawaguchi-Silverman Conjecture for Projectivized Bundles over Curves March 6 Thái Thành Nguyễn (McMaster University) Duality for Asymptotic Invariants February 27 Colin Ingalls (Carleton University) Groupoids associated with non-commutative surfaces February 20 Family Day No Talk February 13 David Wehlau (Royal Military College & Queen's University) Determining whether the invariants of a modular permutation representation are Cohen-Macaulay January 9 Nima Hoda (Cornell University) Strong shortcut groups and asymptotic cones