EVENT DETAILS AND ABSTRACT

Title: Cohomology of Springer fibres in representation theory
Speaker: Professor Catharina Stroppel
Speaker Info: Bonn
Brief Description:
Special Note:
Abstract:

The aim of the talk is to describe how cohomology rings of flag varieties Springer fibres occur in representation theory of Lie algebras as centres of categories, and explain the role of their equivariant version as deformations of categories. As an application we get Springers construction of the irreducible representations of the symmetric group on the top cohomology of the Springer fibre in a categorical version as the top degree of the centre of a category with the symmetric group action induced from a braid group action on the derived category.