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Face and cycle percolation

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arxiv 2212.06243 v1 pith:CQE3ES7S submitted 2022-12-12 math.PR

classification math.PR
keywords percolationfacecyclealternateconsidercriticalinfinitesimplices
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abstract

We consider face and cycle percolation as models for continuum percolation based on random simplicial complexes in Euclidean space. Face percolation is defined through infinite sequences of $d$-simplices sharing a $(d-1)$-dimensional face. In contrast, cycle percolation demands the existence of infinite $d$-cycles, thereby generalizing the lattice notion of plaquette percolation. We discuss the sharp phase transition for face percolation and derive comparison results between the critical intensities for face and cycle percolation. Finally, we consider an alternate version of simplex percolation, by declaring simplices to be neighbors whenever they are sufficiently close to each other, and prove a strict inequality involving the critical intensity of this alternate version and that of face percolation.

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  1. Poisson approximation of large-lifetime cycles

    math.PR 2024-12 conditional novelty 7.0 of 10

    Large-lifetime persistence cycles in Poisson point clouds converge to Poisson point processes, jointly for centers, lifetimes, and deathtimes, in a sparse regime for dimensions d≥2.

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