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Actions affines isométriques propres des groupes hyperboliques sur des espaces $\ell^{p}$ (1609.09480v2)
Published 29 Sep 2016 in math.FA
Abstract: We give a simple and relatively short proof of the following fact: any hyperbolic group admits a proper affine isometric action on a $\ellp$-space for $p$ large enough. A first proof of this result was given by Guoliang Yu.