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Department of Mathematics,
Department of Mathematics,
University of California San Diego
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Algebraic Geometry Seminar
Alexander Perry
Columbia University
Deformation and derived equivalent but non-birational Calabi-Yau threefolds
Abstract:
I will construct a pair of Calabi-Yau threefolds which are deformation and derived equivalent, but not birationally equivalent. I will explain how this gives a counterexample to the birational Torelli problem for Calabi-Yau threefolds, as well as new examples of zero divisors in the Grothendieck ring of varieties. This is joint work with Lev Borisov and Andrei Caldararu.
Host: David Stapleton
May 25, 2018
2:30 PM
AP&M 5829
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