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arXiv · 1303.6251

Multi-marginal optimal transport on Riemannian manifolds

Young-Heon Kim·Brendan Pass
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Abstract

We study a multi-marginal optimal transportation problem on a Riemannian manifold, with cost function given by the average distance squared from multiple points to their barycenter. Under a standard regularity condition on the first marginal, we prove that the optimal measure is unique and concentrated on the graph of a function over the first variable, thus inducing a Monge solution. This result generalizes McCann's polar factorization theorem on manifolds from 2 to several marginals, in the same sense that a well known result of Gangbo and Swiech generalizes Brenier's polar factorization theorem on $\mathbb{R}^n$.

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Young-Heon Kim, Brendan Pass. 2013-03-25. Multi-marginal optimal transport on Riemannian manifolds. https://arxiv.org/abs/1303.6251

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