August 2017 September 2017 |

4:00 pm Tuesday, September 5, 2017 Seminar: Quotient Categoriesby John Calabrese (Rice University)- It is a well known fact that two varieties are birational if and only if they have the same function field. An a priori unrelated theorem is due to Gabriel: two varieties are the same if and only if their categories of coherent sheaves are the same. I'll explain how these two theorems are actually special cases of a broader one, involving quotients of Coh(X). This is joint work with Roberto Pirisi (UBC).
Submitted by ae22@rice.edu |