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Counting closed geodesics on a hyperbolic surface

Dynamics on Moduli Spaces April 13, 2015 - April 17, 2015

April 17, 2015 (02:00 PM PDT - 03:00 PM PDT)
Speaker(s): Maryam Mirzakhani (Stanford University)
Location: MSRI: Simons Auditorium
Video

14228

Abstract

We discuss the asymptotic behavior of the number of closed geodesics of a given combinatorial type on a hyperbolic surface (the closed curve can be disconnected or have self intersections).

We will see that this question is closely related to the distribution of lengths of closed curves on a random pants decomposition of a hyperbolic surface. We use the ergodicity of the earthquake flow to study this problem.

 

More generally, we consider the action of mapping class group on the space of geodesic currents, and discuss the growth of the orbit of an arbitrary point. We discuss both topological and geometric versions of this problem.

Supplements
23399?type=thumb Mirzakhani.Notes 412 KB application/pdf Download
Video/Audio Files

14228

H.264 Video 14228.mp4 377 MB video/mp4 rtsp://videos.msri.org/data/000/023/303/original/14228.mp4 Download
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