Sandra Huppert

Prof. Dr. Felix Schlenk, Université Neuchatel, Vortrag: Slow volume growth and the contact Bott-Samelson theorem

Thursday, 27.06.2013 16:30 im Raum M5

Mathematik und Informatik

Abstract: The Bott-Samelson theorem states that a Riemannian manifold all of whose geodesics are closed must be rather special: either M is a circle or the integral cohomology ring of M is generated by one element. We show that this theorem is actually a "symplectic" theorem: it holds for Reeb flows on spherizations, which are the contact-dynamical generalizations of geodesic flows. The tools in the proof are a slow version of topological entropy, and Lagrangian Floer homology. This is joint work with Urs Frauenfelder and Clémence Labrousse.

Angelegt am Wednesday, 10.04.2013 15:14 von Sandra Huppert
Geändert am Thursday, 13.06.2013 10:03 von Sandra Huppert
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