Asymptotic dimension and hyperfiniteness of generic Cantor actions

We show that for a countable discrete group which is locally of finite asymptotic dimension, the generic continuous action on Cantor space has hyperfinite orbit equivalence relation. In particular, this holds for free groups, answering a question of Frisch-Kechris-Shinko-Vidny\'anszky.

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Hauptverfasser: Iyer, Sumun, Shinko, Forte
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Sprache:eng
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Zusammenfassung:We show that for a countable discrete group which is locally of finite asymptotic dimension, the generic continuous action on Cantor space has hyperfinite orbit equivalence relation. In particular, this holds for free groups, answering a question of Frisch-Kechris-Shinko-Vidny\'anszky.
DOI:10.48550/arxiv.2409.03078