UC Davis Mathematics

Mathematics Colloquia and Seminars

Return to Colloquia & Seminar listing

Virtual invariants of Quot schemes of surfaces

Algebraic Geometry

Speaker: Dragos Oprea, UCSD
Location: 2112 MSB
Start time: Tue, Nov 19 2019, 3:10PM

The Quot schemes of surfaces parametrizing quotients of dimension 0 and 1 admit natural 2-term perfect obstruction theories. I will explain several results concerning the calculation of virtual invariants arising this way, in particular the virtual Euler characteristics. This is based on joint work with Rahul Pandharipande.