July 5, 2019
IHES
Europe/Paris timezone

Purity for Flat Cohomology

Jul 5, 2019, 11:30 AM
1h
Centre de conférences Marilyn et James Simons (IHES)

Centre de conférences Marilyn et James Simons

IHES

Bois Marie 35, route de Chartres 91440 Bures-sur-Yvette

Speaker

Prof. Kęstutis Česnavičius (Université Paris-Sud)

Description

The absolute cohomological purity conjecture of Grothendieck proved by Gabber ensures that on regular schemes étale cohomology classes of fixed cohomological degree extend uniquely over closed subschemes of large codimension. I will discuss the corresponding phenomenon for flat cohomology. The talk is based on joint work with Peter Scholze.

Presentation materials