MS Seminar (Mathematics - String Theory)

Speaker: Adeel Khan (University of Regensburg, Germany)
Title: Intersection theory of derived stacks
Date: Tue, Feb 18, 2020, 13:15 - 14:45
Place: Seminar Room A
Abstract: I will discuss how various formalisms of intersection theory (Chow groups, K-theory, cobordism) can be extended to the setting of derived schemes and stacks. This gives a new approach to virtual phenomena such as the virtual fundamental class and virtual Riemann-Roch formulas, as well as cohomological Hall algebras.