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Applied optimal transport for PDEs - Part 3/3

GFM seminar
FCUL, C6, room 6.2.33
2017-10-26 11:00 .. 12:00
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by Léonard Monsaingeon (GFMUL)

In this series of 3 talks I will discuss several applications of optimal transport to PDEs. I will first discuss the basic theory of optimal transport, including a heuristic differential formalism allowing to view the space of probability measures as a weak Riemannian manifold. Then I will talk about several application, including: (i) constructive existence proofs for parabolic PDEs based on suitable time-discretization (the Jordan-Kinderlehrer-Otto scheme, or DeGiorgi's minimizing movement) yielding conservative numerical schemes, and (ii) McCann's displacement convexity and corresponding long-time convergence results for dissipative systems. This series of talks is intended to be completely self-contained. If time permits I will also discuss a recent extension to unbalanced optimal transport (i-e with mass variations on the space of arbitrary measures), which I recently introduced simultaneously with 2 other teams.