ParkinsonFranceV1, Main, Exploration, bibRecord, 000086

Limit theorems for random walks on Fuchsian buildings and Kac-Moody groups

Identifieur interne : 000086 ( Main/Exploration ); précédent : 000085; suivant : 000087

Limit theorems for random walks on Fuchsian buildings and Kac-Moody groups

Auteurs : L. A. Gilch [Autriche] ; Sebastian Mueller [France] ; J. Parkinson [Australie]

Source :

RBID : Hal:hal-01285400

Abstract

In this paper we prove a rate of escape theorem and a central limit theorem for isotropic random walks on Fuchsian buildings, giving formulae for the speed and asymptotic variance. In particular, these results apply to random walks induced by bi-invariant measures on Fuchsian Kac-Moody groups, however they also apply to the case where the building is not associated to any reasonable group structure. Our primary strategy is to construct a renewal structure of the random walk. For this purpose we define cones and cone types for buildings and prove that the corresponding automata in the building and the underlying Coxeter group are strongly connected. The limit theorems are then proven by adapting the techniques in [21]. The moments of the renewal times are controlled via the retraction of the walks onto an apartment of the building.

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https://hal.archives-ouvertes.fr/hal-01285400

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">In this paper we prove a rate of escape theorem and a central limit theorem for isotropic random walks on Fuchsian buildings, giving formulae for the speed and asymptotic variance. In particular, these results apply to random walks induced by bi-invariant measures on Fuchsian Kac-Moody groups, however they also apply to the case where the building is not associated to any reasonable group structure. Our primary strategy is to construct a renewal structure of the random walk. For this purpose we define cones and cone types for buildings and prove that the corresponding automata in the building and the underlying Coxeter group are strongly connected. The limit theorems are then proven by adapting the techniques in [21]. The moments of the renewal times are controlled via the retraction of the walks onto an apartment of the building.</div>
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Limit theorems for random walks on Fuchsian buildings and Kac-Moody groups

Limit theorems for random walks on Fuchsian buildings and Kac-Moody groups

Source :

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri