Vortrag von Dr. Benjamin Hennion
Sprecher eingeladen von: Prof. Dr. Joseph Ayoub
Datum: 06.03.23 Zeit: 13.15 - 14.45 Raum: Y27H25
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 glueing more involved singularity invariants, such as matrix factorizations. This is joint work with M. Robalo and J. Holstein.