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Thiziri Moulla

The Karoubi-Weibel complexity for groups
Mercredi, 10 Mai, 2023 - 17:00
Résumé : 

The covering type is a combinatorial invariant recently introduced by Karoubi & Weibel in 2016. It has been studied on topological spaces X denoted ct(X), it is the minimal number of open contractible subsets covering Y where Y ranges over the set of topological spaces homotopically equivalent to X. In this talk, I will talk about KW-complexity for finite presentation groups which, by abuse of language, is the covering type of groups. Then I will give you some examples of applications.

Institution de l'orateur : 
Institut Montpellierain Alexander Grothendieck
Thème de recherche : 
Salle : 
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