Topology Seminar: Ben Antieau

  • Date: 04/03/2019
  • Time: 15:00
Ben Antieau, University of Illinois at Chicago

University of British Columbia


de Rham cohomology of classifying spaces and the period-index problem.


I will describe how to use the recent theory of prismatic cohomology of Bhatt--Morrow--Scholze to say something about the de Rham cohomology of classifying spaces of algebraic groups such as PGL_p in characteristic p. This leads to interesting new phenomena, including new obstruction classes to period=index for p-torsion classes in characteristic p.

Other Information: 

Location: ESB 4133 (PIMS Lounge)