The tangent space to the Wasserstein space: parallel transport and other applications

Fuente: arXiv
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Auteur principal: Bertucci, Charles
Format: Preprint
Publié: 2025
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author Bertucci, Charles
author_facet Bertucci, Charles
contents We propose a new notion of the formal tangent space to the Wasserstein space $\mathcal{P}(X)$ at a given measure. Modulo an integrability condition, we say that this tangent space is made of functions over $X$ which are valued in the probability measures over the tangent bundle to $X$. This generalization of previous concepts of tangent spaces allows us to define appropriate notions of parallel transport, $\mathcal{C}^{1,α}$ regularity over $\mathcal{P}(X)$ and translation of a curve over $\mathcal{P}(X)$.
format Preprint
id arxiv_https___arxiv_org_abs_2512_09763
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle The tangent space to the Wasserstein space: parallel transport and other applications
Bertucci, Charles
Analysis of PDEs
Metric Geometry
Optimization and Control
We propose a new notion of the formal tangent space to the Wasserstein space $\mathcal{P}(X)$ at a given measure. Modulo an integrability condition, we say that this tangent space is made of functions over $X$ which are valued in the probability measures over the tangent bundle to $X$. This generalization of previous concepts of tangent spaces allows us to define appropriate notions of parallel transport, $\mathcal{C}^{1,α}$ regularity over $\mathcal{P}(X)$ and translation of a curve over $\mathcal{P}(X)$.
title The tangent space to the Wasserstein space: parallel transport and other applications
topic Analysis of PDEs
Metric Geometry
Optimization and Control
url https://arxiv.org/abs/2512.09763