Characterising acylindrical hyperbolicity via permutation actions

preprint2022arXivOpen access

Abstract

We characterise acylindrical hyperbolicity of a group in terms of properties of an action of the group on a set (without any extra structure). In particular, this applies to the action of the group on itself by left multiplication, as well as the action on a (full measure subset of the) Furstenberg-Poisson boundary.

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