Professor Dan Cristofaro-Gardiner
University of California, Santa Cruz
Montag, 6. Dezember 2021
1009/L und Zoom (hybride Veranstaltung)
über das Thema:
I will talk about some recent joint work showing that a generic smooth area-preserving diffeomorphism of a closed surface has a dense set of periodic points. In the C^1 topology, these kind of results were proved by Pugh and Robinson and are generally called “closing lemmas”; finding closing lemmas in higher regularity is the subject of Smale’s 10th problem.
A kind of Weyl law recovering the average rotation through the actions of periodic points plays a central role in the proof.
If you want to take part via Zoom please ask Prof. Urs Frauenfelder for login details.
|Hierzu ergeht herzliche Einladung.|
|Prof. Dr. Urs Frauenfelder|