Seth Wolbert

(Department of Mathematics, University of Manitoba)

Lie Groupoids and Geometric Stacks, Part II

Date Thursday, April 4, 2019

This week, we will continue last week's topic by discussing how one may represent Morita equivalence of Lie groupoids via a special type of "morphism" called an invertible bibundle. This will allow us to associate to each Lie groupoid a geometric stack and thereby allow us to convert problems about Lie groupoids up to Morita equivalence into problems about stacks.