12 jun 2019 -- 16:30
Aula Magna, Dipartimento di Matematica, Pisa
Seminario di geometria algebrica e aritmetica di Pisa
Abstract.
In the talk I will introduce the crystalline site of a variety in positive characteristic, discuss the notion of crystals and isocrystals over it and define its crystalline fundamental group. I will then discuss Berthelot's conjecture and its relation with the exactness of the homotopy sequence of a fibration.