The almost finiteness conjecture for free amenable group actions

Let GG be a countably infinite amenable discrete group acting freely on a finite-dimensional compact metrizable space XX. Almost finiteness conjecture. The action of GG on XX is almost finite. Almost finiteness is a central condition in the study of crossed products arising from amenable group actions; it implies regularity properties such as Z{\mathcal Z}-stability and is known in many important examples, but the general finite-dimensional case remains open.

Sources & referencesView supporting material

Primary source

Petr Naryshkin and Spyridon Petrakos, “Almost finiteness and groups of dynamical origin”, arXiv:2401.06006 (2025).

Additional references

2 papers in this index state this conjecture (2023–2024). The statement above is taken from the most recent of them; the others are arXiv:2304.02456.

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