Seminar Event Detail

Algebraic Geometry

Date:  Wednesday, February 21, 2018
Location:  4096 East Hall (4:10 PM to 5:30 PM)

Title:  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.


Speaker:  Alex Perry
Institution:  Columbia University

Event Organizer:     


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