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On fixed point property for $L_p$-representations of Kazhdan groups (2007.15168v2)

Published 30 Jul 2020 in math.GR and math.FA

Abstract: Let $G$ be a topological group with finite Kazhdan set, let $\Omega$ be a standard Borel space and $\mu$ a finite measure on $\Omega$. We prove that for any $p\in [1, \infty)$, any affine isometric action $G \curvearrowright L_p(\Omega, \mu)$ whose linear part arises from an ergodic measure-preserving action $G \curvearrowright (\Omega, \mu)$, has a fixed point.

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