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Limits of random tree-like discrete structures

Abstract : We study a model of random R-enriched trees that is based on weights on the R-structures and allows for a unified treatment of a large family of random discrete structures. We establish distributional limits describing local convergence around fixed and random points in this general context, limit theorems for component sizes when R is a composite class, and a Gromov–Hausdorff scaling limit of random metric spaces patched together from independently drawn metrics on the R-structures. Our main applications treat a selection of examples encompassed by this model. We consider random outerplanar maps sampled according to arbitrary weights assigned to their inner faces, and classify in complete generality distributional limits for both the asymptotic local behaviour near the root-edge and near a uniformly at random drawn vertex. We consider random connected graphs drawn according to weights assigned to their blocks and establish a Benjamini–Schramm limit. We also apply our framework to recover in a probabilistic way a central limit theorem for the size of the largest 2-connected component in random graphs from planar-like classes. We prove Benjamini–Schramm convergence of random k-dimensional trees and establish both scaling limits and local weak limits for random planar maps drawn according to Boltzmann-weights assigned to their 2-connected components.
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Contributor : Benedikt Stufler Connect in order to contact the contributor
Submitted on : Friday, December 9, 2016 - 2:18:49 AM
Last modification on : Tuesday, November 19, 2019 - 10:30:44 AM
Long-term archiving on: : Thursday, March 23, 2017 - 9:04:18 AM


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  • HAL Id : ensl-01412884, version 1
  • ARXIV : 1612.02580



Benedikt Stufler. Limits of random tree-like discrete structures. 2016. ⟨ensl-01412884⟩



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