Equivalence relations by groupoids. Residual gerbes. Speaker: TBA Monday, May 12, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
Topological space of a stack. Tangent spaces and dimension. Definition of quasi-finite, étale, and unramified morphisms. Speaker: TBA Monday, May 5, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
Algebraicity of quotient stacks U/G. Representability of the diagonal. Algebraicity of M_g Speaker: Mihai Pavel (IMAR) Monday, April 28, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
Definition of algebraic spaces and algebraic stacks. Deligne-Mumford stacks. Representibility and properties of morphisms. Speaker: Virginie Gaillard (IMAR) Monday, April 14, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
Introduction to fibered categories and stacks. Stackification. Speaker: Cameron Ruether (IMAR) Monday, April 7, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
Descent theory and examples. Review of sites and sheaves. Speaker: Margot Bruneaux (Institut Camille Jordan) Monday, March 31, 2025, 14:00 Sala 804 "Ciprian Foias", IMAR
