Tim de Laat

activity

20102023

most citedSimple Lie groups without the Approximation Property

71 citations · 286 across the 17 of their papers we have counts for

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Showing 2023Show all

2 papers · 1 filter

math.OA2023

Dynamical propagation and Roe algebras of warped spaces

Tim de Laat, Federico Vigolo, Jeroen Winkel

Given a non-singular action $Γ ↷ (X, μ)$ , we define the $*$ -algebra $C_{fp} [Γ ↷ X]$ of operators of finite dynamical propagation associated w…

math.GR2023

Actions of higher rank groups on uniformly convex Banach spaces

Tim de Laat, Mikael de la Salle

We prove that all isometric actions of higher rank simple Lie groups and their lattices on arbitrary uniformly convex Banach spaces have a fixed point. This vastly generalises a re…