HD-Combinatorics: Frank Calegari, "Methods for computing homology and cohomology"

Abstract: We describe some different techniques for studying cohomology (both rationally and integrally), including the idea of studying "towers" (of spaces or groups). Examples include the circle, the Alexander polynomial of a knot, and arithmetic groups.

Date: 

Mon, 22/01/2018 - 09:00 to 11:00

Location: 

IIAS, Feldman Building, Givat Ram