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Wilhelm Killing Kolloquium: Prof. Dr. Roman Sauer (Universität Karlsruhe): per ZOOM: Actions on Cantor spaces, volume and macroscopic scalar curvature

Thursday, 29.04.2021 16:30 per ZOOM: Link to Zoom info

Mathematik und Informatik

We introduce the macroscopic point of view for questions around scalar curvature. Then we discuss the macroscopic cousins of three conjectures: 1) a conjectural bound of the simplicial volume of a Riemannian manifold in the presence of a lower scalar curvature bound, 2) the conjecture that rationally essential manifolds do not admit metrics of positive scalar curvature, 3) a conjectural bound of ?²-Betti numbers of aspherical Riemannian manifolds in the presence of a lower scalar curvature bound. Group actions on Cantor spaces surprisingly play an important role in the proof. The talk is based on joint work with Sabine Braun.



Angelegt am Wednesday, 17.03.2021 09:57 von mathsekr
Geändert am Thursday, 15.04.2021 10:41 von mathsekr
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Vorträge des SFB 1442
Kolloquium Wilhelm Killing