| HAL : hal-00719848, version 1 |
| arXiv : 1207.5116 |
| Fiche détaillée | Récupérer au format |
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| Displacement convexity of entropy and related inequalities on graphs |
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| Nathaël Gozlan 1Cyril Roberto 2 |
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| (18/07/2012) |
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| We introduce the notion of an interpolating path on the set of probability measures on finite graphs. Using this notion, we first prove a displacement convexity property of entropy along such a path and derive Prekopa-Leindler type inequalities, a Talagrand transport-entropy inequality, certain HWI type as well as log-Sobolev type inequalities in discrete settings. To illustrate through examples, we apply our results to the complete graph and to the hypercube for which our results are optimal -- by passing to the limit, we recover the classical log-Sobolev inequality for the standard Gaussian measure with the optimal constant. |
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| 1 : | Laboratoire d'Analyse et de Mathématiques Appliquées (LAMA) |
| Université Paris-Est Marne-la-Vallée (UPEMLV) – Université Paris-Est Créteil Val-de-Marne (UPEC) – CNRS : UMR8050 – Fédération de Recherche Bézout | |
| 2 : | Modélisation aléatoire de Paris X (MODAL'X) |
| Université Paris X - Paris Ouest Nanterre La Défense | |
| 3 : | School of Mathematics, School of Computer Science (School of Mathematics) |
| Georgia Institute of Technology (Georgia Tech) | |
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| School of Mathematics & School of Computer Science, Georgia Institue of Technology, Atlanta |
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| Domaine | : | Mathématiques/Probabilités Mathématiques/Analyse fonctionnelle |
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| Displacement convexity – transport inequalities – modified logarithmic-Sobolev inequalities – Ricci curvature |
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| Liste des fichiers attachés à ce document : | ||||||||||
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| hal-00719848, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00719848 | |
| oai:hal.archives-ouvertes.fr:hal-00719848 | |
| Contributeur : Cyril Roberto | |
| Soumis le : Samedi 21 Juillet 2012, 09:34:23 | |
| Dernière modification le : Samedi 21 Juillet 2012, 12:21:10 | |