Viktor Stein

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math.AP2026

Wasserstein Gradient Flows of MMD Functionals with Distance Kernel and Cauchy Problems on Quantile Functions

Richard Duong, Viktor Stein, Robert Beinert +2

We give a comprehensive description of Wasserstein gradient flows of maximum mean discrepancy (MMD) functionals $F_{I^} ½ := MMD_{K}^{2} (\cdot, I^½)$ towards given target mea…

math.AP2025

Wasserstein Gradient Flows of MMD Functionals with Distance Kernels under Sobolev Regularization

Richard Duong, Nicolaj Rux, Viktor Stein +1

We consider Wasserstein gradient flows of maximum mean discrepancy (MMD) functionals $MMD_{K}^{2} (\cdot, I^½)$ for positive and negative distance kernels $K (x, y) := \pm ∣ x - y ∣$ an…