Algebra/Topology seminar
Speaker: Achim Krause
Title: Picard groups of stable module categories
Abstract: For a commutative ring R and a finite group G, one can form the stable module category, which is closely related to Tate cohomology. Its Picard group has been extensively studied in representation theory for R a field of characteristic p (and typically G a p-group). In this talk I want to report on a project with Jesper Grodal, where we study what happens for R a ring of integers. We observe interesting character-theoretic phenomena.