Extending all torsor on the punctured Spec A_inf

Mardi 4 mai 14:00-15:15 - Johannes Anschütz - Université de Bonn

Résumé : In this talk I want to present some key aspects of the proof that torsors
under parahoric group schemes on the punctured spectrum of Fontaine’s
ring A_inf extend to the whole spectrum. To motivate this question an
application to the v-stack of G-isocrystals on perfect rings will be given.

Lieu : Séminaire en ligne

Extending all torsor on the punctured Spec A_inf  Version PDF