MATH Seminar

Title: Moduli of Wildly Ramified Covers of Curves
Seminar: Algebra and Number Theory
Speaker: Andrew Kobin of University of California-Santa Cruz
Contact: David Zureick-Brown,
Date: 2021-02-22 at 1:00PM
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One of many hazards in the jungle of characteristic p algebraic geometry is the presence of wild ramification, which is in a loose sense what happens when objects possess automorphisms of order divisible by p. In this talk, I will tell an incomplete story of wild ramification for algebraic curves in characteristic p, starting with the fundamental example of Artin-Schreier curves. I will also describe some work in progress towards a description of the moduli stack of Artin-Schreier covers of curves, part of which relies on results in a recent preprint (arXiv:1910.03146).

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