Mikael Rørdam (Kopenhagen): Around traces. Oberseminar C*-Algebren.

I will first talk about correlation matrices arising from mixed moments, in terms of traces, of unitaries, respectively, projections, and how these relate to Ts...

Arpon Raksit (Stanford University, USA): The filtered circle. (Oberseminar Topologie)

I will describe a conceptual (universal property?based) perspective on the relationship between Hochschild homology and derived de Rham cohomology in the settin...

Oberseminar Differentialgeometrie: Panagiotis Gianniotis (Athen): tba

Mittagsseminar: Pierre Colmez (Paris): p-adic curves

We will explain how to decompose a p-adic curve in a way reminiscent to the pants decompositions of Riemann surfaces, and how to use this to compute the cohomol...

Oberseminar p-adische Arithmetik: Claudius Heyer: Frobenius descent

A. Hock: Maps of discrete surfaces and Tutte's equations (Oberseminar Riemann surfaces and topological recursion)

Julio Backhoff, Univ. Twente: All adapted topologies are equal (Oberseminar Mathematische Stochastik)

Several researchers have introduced topological structures on the set of laws of stochastic processes.

Kolloquium Wilhelm Killing: Prof. Dr. Gérard Besson (Grenoble): Compactness results for non positively curved metric measured spaces

This is a joint work with G. Courtois, S. Gallot and A. Sambusetti. We will study some compact metric spaces satisfying weak versions of curvature assumptions. ...