## Geometry Seminar - Abstracts

### Talk

Wednesday 13 March 2019, 16:00-17:00 in HG03.085

**Stefan Suhr** (Ruhr-Universität Bochum)

*Optimal transportation and the Einstein equation*

### Abstract

The Ricci curvature is the basic ingredient in the Einstein
equations of general relativity. In recent years the interpretation of
Ricci curvature in Riemannian geometry has changed fundamentally via its
characterization in terms of convexity properties of e.g. the
Shannon-Bolzmann entropy of optimal transportation. In my talk I will
explain the recent development of an analogous characterization of Ricci
curvature and the Einstein equation in Lorentzian geometry.

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