Department of Mathematics

Seminar / Workshop

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Optimal transport of measures via autonomous vector fields
Seminario periodico del Dipartimento di Matematica
5 December 2024, time 14:00
PovoZero, Via Sommarive 14, Povo (Trento)
Aula Seminari 1– Povo0
Free
Target audience: UniTrento students, University community
Referent: Andrea Marchese, Andrea Pinamonti e Paolo Bonicatto
Contatti:
Staff of the Department of Mathematics
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Speaker: Nicola De Nitti (EPFL Lausanne)

Abstract

We study the problem of transporting one probability measure to another via an autonomous velocity field. We rely on tools from the theory of optimal transport. In one space-dimension, we solve a linear homogeneous functional equation to construct a
suitable autonomous vector field that realizes the (unique) monotone transport map as the time-1 map of its flow. Generically, this vector field can be chosen to be Lipschitz continuous. We then use Sudakov's disintegration approach to deal with the multidimensional case by reducing it to a family of one-dimensional problems. This talk is based on a joint work with Xavier Fernández-Real.

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