Seminar series
Date
Thu, 21 Feb 2013
Time
15:30 -
16:30
Location
L2
Speaker
Anatoly Preygel
Organisation
UC Berkeley
The bounded coherent dg-category on (suitable versions of) the Steinberg stack of a reductive group G is a categorification of the affine Hecke algebra in representation theory. We discuss how to describe the center and universal trace of this monoidal dg-category. Many of the techniques involved are very general, and the description makes use of the notion of "odd micro-support" of coherent complexes. This is joint work with Ben-Zvi and Nadler.