Séminar Teich

Nous allons accueillir ce vendredi Sebastián Barbieri de l’Université de Santiago au Chili, qui nous parlera des groupes auto-simulables dont le groupe de Thompson… ou pas !
Comme Sebastián nous appelle de Chili (et le décalage horaire est de —6 heures), nous avons décidé de tenir la séance du Teich à 14h, vendredi 16 avril. 

title: Self-simulable groups.

Abstract: We say that a finitely generated group is self-simulable if every action on a zero-dimensional space which is effectively closed (this means it is “computable” in a specific way) is the topological factor of a subshift of finite type on said group. Even though this seems like a property which is very hard to satisfy, we will show that these groups do exist and satisfy nice stability properties. We shall present several examples of these groups, including a proof that Thompson’s group F satisfies the property if and only if it is non-amenable. Joint work with Mathieu Sablik and Ville Salo.

 

Singularity Webinar

The next seminar from the Singularity Webinar from Marseille will take place ThursdayApril 15, from 14h to 15h via Zoom (see details below). We will have the pleasure to listen to:


Speaker :
 Anna VALETTE (Krakow),
Title : 
Efroymson’s Approximation Theorem for globally subanalytic  functions.


The abstract
as well as the list of the forthcoming speakers, is available on the website of the webinarhttps://sites.google.com/view/singularites-marseille

The next talk will be in English, as well as future talks, in order to accommodate a larger public.

Singularity Webinar

The next seminar from the Singularity Webinar from Marseille will take place ThursdayApril 01, from 14h to 15h via Zoom (see details below). We will have the pleasure to listen to:


Speaker : 
Raf CLUCKERS (Lille-Leuven)
Title : 
Non-archimedean analogue of Wilkie’s conjecture and point counting, from Pfaffian over subanalytic to Hensel minimal.


The abstract
as well as the list of the forthcoming speakers, is available on the website of the webinarhttps://sites.google.com/view/singularites-marseille