Séminaires : Séminaire Général de Logique

Equipe(s) : lm,
Responsables :O. Finkel, T. Ibarlucía, A. Khélif, S. Rideau, A. Vignati
Email des responsables :
Salle : salle 2015
Adresse :Sophie Germain
Description

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Orateur(s) Andreas Hallback - Université de Paris,
Titre Locally Roelcke precompact groups and continuous logic
Date02/12/2019
Horaire15:15 à 16:15
Résume

The topic of this talk lies at the intersection of continuous logic and Polish group theory. Inspired by a result of Ben-Yaacov, Rosendal and Tsankov characterising the Roelcke precompact Polish groups as automorphism groups of separably categorical metric structures, we give a characterisation of the locally Roelcke precompact Polish groups, using concepts from continuous model theory. If time permits, we will see how this result applies to the so-called Urysohn diversity - a hypergraph version of metric spaces introduced recently by Bryant, Nies and Tupper. We will give brief introductions to all subjects involved, but hope the audience is somewhat familiar with continuous logic.

Salle2015
AdresseSophie Germain
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