Hutchcroft's weighted-amenability threshold conjecture

Let GG be a graph, let Γ\Gamma be a closed subgroup of Aut(G)\operatorname{Aut}(G) acting transitively on GG, and let w\mathbf{w} be the induced relative weight function. Let ph(G,Γ)p_h(G,\Gamma) be the heavy-cluster threshold and let pu(G)p_u(G) be the uniqueness threshold. Hutchcroft's conjecture. The graph GG is w\mathbf{w}-amenable if and only if

ph(G,Γ)=pu(G).p_h(G,\Gamma)=p_u(G).

This is presented as a generalization of the Benjamini–Schramm conjecture relating amenability to equality of percolation thresholds. Its status is not resolved in the supplied text.

Sources & referencesView supporting material

Primary source

Grigory Terlov and Ádám Timár, “Weighted-amenability and percolation”, arXiv:2502.02560 (2025).

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