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DTSTART:20210328T010000
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DTSTART;TZID=Europe/Paris:20211110T110000
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SUMMARY:« Joshua Frisch\, raconte-moi la moyennabilité forte ! »
DESCRIPTION:A topological dynamical system (i.e. a group acting by homeomorphisms on a compact metric space) is said to be proximal if for any two points p and q we can simultaneously « squish them together ». A group is strongly amenable if every proximal dynamical system has a fixed point. In this talk I will give an introduction to proximal actions\, strong amenability and discuss connections with other group theoretic properties. No prior knowledge of topological dynamics or amenability will be assumed. \nEn salle W au DMA\, ou sur Zoom (réunion 997 7829 7310\, mot de passe abc123).
URL:https://www.math.ens.psl.eu/evenement/joshua-frisch-raconte-moi-la-moyennabilite-forte/
LOCATION:En hybride\, 45 rue d'Ulm\, Paris\, 75005
CATEGORIES:Séminaire Raconte-moi
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