Deligne Lusztig theory
Sprecher/Organisator: Prof. Dr. Eva Viehmann
Termin: Fr 10-12, SR1C
Deligne-Lusztig theory is an elegant geometric way to construct representations of finite groups of Lie type (i.e. the F_q-points of reductive groups over a finite field F_q). More precisely, we will study the l-adic cohomology of suitable subvarieties of flag varieties (so-called Deligne-Lusztig varieties) and their coverings. In particular one can construct in this way all representations of all finite simple groups of Lie type.