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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3 papers · 1 filter

math.FA2021

Weak*-continuity of invariant means on spaces of matrix coefficients

Tim de Laat, Safoura Zadeh

With every locally compact group $G$ , one can associate several interesting bi-invariant subspaces $X (G)$ of the weakly almost periodic functions $WAP (G)$ on $G$ , each of…

math.FA2017★ 11 cited

Banach space actions and $L^{2}$ -spectral gap

Tim de Laat, Mikael de la Salle

Żuk proved that if a finitely generated group admits a Cayley graph such that the Laplacian on the links of this Cayley graph has a spectral gap $> \frac{1}{2}$ , then the group has…

math.FA2015★ 11 cited

On strong property (T) and fixed point properties for Lie groups

Tim de Laat, Masato Mimura, Mikael de la Salle

We consider certain strengthenings of property (T) relative to Banach spaces that are satisfied by high rank Lie groups. Let X be a Banach space for which, for all k, the Banach--M…

Weak*-continuity of invariant means on spaces of matrix coefficients

Banach space actions and L2-spectral gap

On strong property (T) and fixed point properties for Lie groups

Banach space actions and $L^{2}$ -spectral gap