Am 29. Juni 2026 findet am Institut für Mathematik das Kolloquium des SFB-TRR 358 statt. Die Vortragenden sind Hans-Joachim Hein (Universität Münster) und Wolfgang Lück (Universität Bonn).
Abstract: The quadratic Wasserstein space over a Riemannian manifold inherits asurprisingly rich geometry from its base. In this talk, I will address the question of geometric rigidity for these spaces. The main result establishes that the isometries of the Wasserstein space are entirely induced by the isometries of the Riemannian base if and only if the base lacks a Euclidean de Rham factor. In addition, the Wasserstein space determines the…
Abstract: This talk is related to the relative Langlands' program, which aims to extend the classical Langlands' program to spherical varieties. In the classical case, a well-known \emph{trace Paley-Wiener theorem} was given by Bernstein, Deligne and Kazhdan in 1986. It gives a characterization of the functions
$$\pi \mapsto \mathrm{Tr}(\pi(f)),$$
with $G$ a reductive $p$-adic group, and where $\pi$ ranges over isomorphism classes of smooth…
