| HAL : hal-00551333, version 1 |
| arXiv : 1101.0522 |
| Fiche détaillée | Récupérer au format |
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| Rendiconti del Seminario Matematico della Università di Padova 127 (2012) 41-55 |
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| Brownian motion, reflection groups and Tanaka formula |
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Nizar Demni 1Dominique Lépingle 2 |
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| (2012) |
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| In the setting of finite reflection groups, we prove that the projection of a Brownian motion onto a closed Weyl chamber is another Brownian motion normally reflected on the walls of the chamber. Our proof is probabilistic and the decomposition we obtain may be seen as a multidimensional extension of Tanaka's formula for linear Brownian motion. The paper is closed with a description of the boundary process through the local times at zero of the distances from the initial process to the facets. |
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| 1 : | Institut de Recherche Mathématique de Rennes (IRMAR) |
| CNRS : UMR6625 – Université de Rennes 1 – École normale supérieure de Cachan - ENS Cachan – Institut National des Sciences Appliquées (INSA) : - RENNES – Université de Rennes II - Haute Bretagne | |
| 2 : | Mathématiques - Analyse, Probabilités, Modélisation - Orléans (MAPMO) |
| Université d'Orléans – CNRS : UMR7349 | |
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| Théorie ergodique |
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| Domaine | : | Mathématiques/Probabilités |
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| Reflected Brownian motion – Weyl chamber – reflection groups – longest element – local time – Tanaka formula |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00551333, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00551333 | |
| oai:hal.archives-ouvertes.fr:hal-00551333 | |
| Contributeur : Dominique Lepingle | |
| Soumis le : Lundi 3 Janvier 2011, 14:35:58 | |
| Dernière modification le : Mercredi 24 Octobre 2012, 10:59:34 | |