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Simple peeling of planar maps with application to site percolation

Abstract : Abstract The peeling process, which describes a step-by-step exploration of a planar map, has been instrumental in addressing percolation problems on random infinite planar maps. Bond and face percolations on maps with faces of arbitrary degree are conveniently studied via so-called lazy-peeling explorations. During such explorations, distinct vertices on the exploration contour may, at latter stage, be identified, making the process less suited to the study of site percolation. To tackle this situation and to explicitly identify site-percolation thresholds, we come back to the alternative “simple” peeling exploration of Angel and uncover deep relations with the lazy-peeling process. Along the way, we define and study the random Boltzmann map of the half-plane with a simple boundary for an arbitrary critical weight sequence. Its construction is nontrivial especially in the “dense regime,” where the half-planar random Boltzmann map does not possess an infinite simple core.
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https://hal-universite-paris-saclay.archives-ouvertes.fr/hal-03287361
Contributor : Nicolas Curien <>
Submitted on : Thursday, July 15, 2021 - 3:39:46 PM
Last modification on : Saturday, July 17, 2021 - 3:46:04 AM

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Timothy Budd, Nicolas Curien. Simple peeling of planar maps with application to site percolation. Canadian Journal of Mathematics, University of Toronto Press, 2021, pp.1-35. ⟨10.4153/S0008414X21000146⟩. ⟨hal-03287361⟩

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