The SL(2,R) action on Moduli space: Mordell Lecture

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• Eskin, A (University of Chicago)
• Thursday 03 July 2014, 17:00-18:00
• Seminar Room 1 Newton Institute.

If you have a question about this talk, please contact Mustapha Amrani.

Interactions between Dynamics of Group Actions and Number Theory

We prove some ergodic-theoretic rigidity properties of the action of SL(2; R) on the moduli space of compact Riemann surfaces. In particular, we show that any ergodic measure invariant under the action of the upper triangular subgroup of SL(2; R) is supported on an invariant a ffine submanifold. The main theorems are inspired by the results of several authors on unipotent flows on homogeneous spaces, and in particular by Ratners seminal work. This is joint work with Maryam Mirzakhani and Amir Mohammadi.

This talk is part of the Isaac Newton Institute Seminar Series series.

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