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1 vote

Uniqueness of maximizer of dual Kantorovich problem with quadratic(or any strictly convex) cost

There exists some recent work dealing with it, see Lemma 2.1 in https://arxiv.org/abs/1705.01299 for the quadratic case and theorem 2.6 in https://arxiv.org/abs/2102.06379 for the general one.
alberto gonzález's user avatar