The connectivity conjecture for the crossing graph of random right-angled Coxeter groups

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Let Γ\Gamma be a random graph in G(n,p)\mathcal{G}(n,p), and let □(Γ)\square(\Gamma) denote the graph whose vertices are induced Morse 44-cycles of Γ\Gamma, with adjacency determined by the crossing relation.

Connectivity conjecture. For every ϵ>0\epsilon>0, if

A‾+(()n)>(1+ϵ)log⁡nn,{{\overline A}^{+}({(})}n)>(1+\epsilon)\sqrt{\frac{\log n}{n}},

then, asymptotically almost surely, □(Γ)\square(\Gamma) is connected.

This conjecture identifies the proposed sharp threshold for connectedness of □(Γ)\square(\Gamma), complementing the result that below the corresponding lower threshold □(Γ)\square(\Gamma) has an isolated vertex. The source does not provide a resolution of the conjecture.

References

Primary source

Tim Susse, “Morse subgroups and boundaries of random right-angled Coxeter groups”, arXiv:2108.09824 (2021).

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