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Groups And Dynamics
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Hunter Vallejos, PMA 11.176: Benjamini-Schramm convergence of high genus Masur-Smillie-Veech random translation surfaces in the principal stratum
Friday, October 25, 2024, 11:00am - 12:00pm
Benjamini-Schramm convergence is a notion which captures the local geometry of a random point on a random space. It was originally introduced to study random rooted finite planar graphs (while sending the number of vertices to infinity), but it has since been generalized to a wide range of objects. A translation surface is a surface on which the local geometry is that of the Euclidean plane everywhere except for a discrete set of points called singularities. At each singularity, there is a multiple of 2pi extra cone angle; that is, the local geometry is identical to the k-fold branched cover of the complex plane corresponding to the map z - z^k. The set of translation surfaces of genus g and area g admits a natural, Lebesgue-class, finite measure called Masur-Smillie-Veech (MSV) measure. In this talk, I will speak about joint work with Lewis Bowen and Kasra Rafi where we prove Benjamini-Schramm convergence of MSV-distributed random translation surfaces as genus tends to infinity. We have also identified the limit, which is called a Poisson translation plane. This is a thesis defense.
Location: PMA 11.176

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