Speaker
Benjamin Hennion
(Université de Paris-Saclay)
Description
Donaldson--Thomas invariants are numerical invariants associated to Calabi--Yau varieties. They can be obtained by glueing singularity invariants from local models of a suitable moduli space endowed with a (-1)-shifted symplectic structure.
By studying the moduli of such local models, we will explain how to recover Brav--Bussi--Dupont--Joyce--Szendroi's perverse sheaf categorifying the DT-invariants, as well as a strategy for gluing more evolved singularity invariants, such as matrix factorizations.
This is joint work with M. Robalo and J. Holstein.
