Necessary and sufficient conditions for continuity of optimal transport maps on Riemannian manifolds

Creators: Figalli, Alessio; Rifford, Ludovic; Villani, Cédric

Others:: Department of Mathematics and Statistics [Texas Tech] ; Texas Tech University [Lubbock] (TTU); Laboratoire Jean Alexandre Dieudonné (JAD) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS); Institut Camille Jordan [Villeurbanne] (ICJ) ; École Centrale de Lyon (ECL) ; Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL) ; Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon) ; Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet [Saint-Étienne] (UJM)-Centre National de la Recherche Scientifique (CNRS)

Description

In this paper we investigate the regularity of optimal transport maps for the squared distance cost on Riemannian manifolds. First of all, we provide some general necessary and sufficient conditions for a Riemannian manifold to satisfy the so-called Transport Continuity Property. Then, we show that on surfaces these conditions coincide. Finally, we give some regularity results on transport maps in some specific cases, extending in particular the results on the flat torus and the real pro jective space to a more general class of manifolds.

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Necessary and sufficient conditions for continuity of optimal transport maps on Riemannian manifolds

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