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Weak amenability of free products of hyperbolic and amenable groups
Published online by Cambridge University Press: 06 January 2022
Abstract
We show that if G is an amenable group and H is a hyperbolic group, then the free product $G\ast H$ is weakly amenable. A key ingredient in the proof is the fact that $G\ast H$ is orbit equivalent to $\mathbb{Z}\ast H$ .
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- © The Author(s), 2022. Published by Cambridge University Press on behalf of Glasgow Mathematical Journal Trust