Equivalence between dimensional contractions in Wasserstein distance and the curvature-dimension condition

• François Bolley ^[1] ; Ivan Gentil ^[2] ; Arnaud Guillin ^[4] ; Kazumasa Kuwada ^[3]
  1. [1] Pierre and Marie Curie University

     Pierre and Marie Curie University

     París, Francia

     
  2. [2] Claude Bernard University Lyon 1

     Claude Bernard University Lyon 1

     Arrondissement de Lyon, Francia

     
  3. [3] Tokyo Institute of Technology

     Tokyo Institute of Technology

     Japón

     
  4. [4] Universite Clermont Auvergne, France

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• Localización: Annali della Scuola Normale Superiore di Pisa. Classe di scienze, ISSN 0391-173X, Vol. 18, Nº 3, 2018, págs. 845-880
• Idioma: inglés
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• Resumen

  • The curvature-dimension condition is a generalization of the Bochner inequality to weighted Riemannian manifolds and general metric measure spaces.

    It is now known to be equivalent to evolution variational inequalities for the heat semigroup, and quadratic Wasserstein distance contraction properties at different times. On the other hand, in a compact Riemannian manifold, it implies a same-time Wasserstein contraction property for this semigroup. In this work we generalize the latter result to metric measure spaces and more importantly prove the converse: contraction inequalities are equivalent to curvature-dimension conditions.

    Links with functional inequalities are also investigated