Séminaires : Séminaire de Logique Lyon-Paris

Equipe(s) : lm,
Responsables :O. Finkel, T. Ibarlucía, A. Khélif, S. Rideau, A. Vignati
Email des responsables :
Salle : https://bigbluebutton.imj-prg.fr/b/sil-gwg-gge
Adresse :Sophie Germain
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Orateur(s) Silvain Rideau-Kikuchi - Université de Paris,
Titre A model theoretic theoretic account of the tilting equivalence
Date22/04/2020
Horaire16:00 à 17:00
Diffusion
Résume

Generalizing work of Krasner and Fontaine-Wintenberger on the isomorphism of absolute Galois groups between a mixed characteristic perfectoid field K and its charactersitic p tilt K^flat = prolim_{x -> x^p} K, Scholze introduced a notion of perfectoid adic space and proved an equivalence of category between perfectoid adic spaces over K and over K^flat. The goal of this talk will be to give a model theoretic translation of these results. We will show that, in a well chosen continuous structure, K and K^flat are bi-interpretable and that this immediately yields an equivalence of categories between type spaces over K and K^flat. We will then explain how these result relate to Scholze's results in adic geometry.

This is joint work with Tom Scanlon and Pierre Simon

Sallehttps://bigbluebutton.imj-prg.fr/b/sil-gwg-gge
AdresseSophie Germain
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