Moment graphs and sheaves on moment graphs are basically combinatorial objects that have be used to describe equivariant intersectiion cohomology. In these lectures we are going to show that they can be used to provide a direct link from this cohomology to the representation theory of simple Lie algebras and of simple algebraic groups. The first section contains some background on equivariant cohomology.
|Summer School on Geometric Methods in Representation Theory
|16/06/2008 → 03/07/2008
|Seminaires et Congres