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Geometric arithmetic statistics

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Jordan Ellenberg
University of Wisconsin-Madison
Mon, 2019-06-03 11:00 - 12:00
MPIM Lecture Hall

We will explain the general philosophy by which one can relate questions in arithmetic statistics over Q to analogous questions over function fields of curves over $F_q$, and from there to questions about the topology of moduli spaces of complex algebraic varieties and morphisms. Our primary example will be the result of Ellenberg-Venkatesh-Westerland on geometric Cohen-Lenstra and the cohomology of Hurwitz spaces, but we will also try to indicate what this program might look like in the context of variation of Selmer groups,
with reference to recent work of Landesman and of Park-Wang.

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