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Article Dans Une Revue Bernoulli Année : 2018

Curvature and transport inequalities for Markov chains in discrete spaces

Max Fathi
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Résumé

We study various transport-information inequalities under three different notions of Ricci curvature in the discrete setting: the curvature-dimension condition of Bakry and \'Emery, the exponential curvature-dimension condition of Bauer \textit{et al.} and the coarse Ricci curvature of Ollivier. We prove that under a curvature-dimension condition or coarse Ricci curvature condition, an $L_1$ transport-information inequality holds; while under an exponential curvature-dimension condition, some weak-transport information inequalities hold. As an application, we establish a Bonnet-Meyer's theorem under the curvature-dimension condition CD$(\kappa,\infty)$ of Bakry and \'Emery.

Dates et versions

hal-01874828 , version 1 (14-09-2018)

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Max Fathi, Yan Shu. Curvature and transport inequalities for Markov chains in discrete spaces. Bernoulli, 2018. ⟨hal-01874828⟩
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