BIMSA > BIMSA AG Seminar Counting surfaces on Calabi-Yau fourfolds
Counting surfaces on Calabi-Yau fourfolds
Organizers
Mao Sheng , Artan Sheshmani , Nan Jun Yang , Bei Hui Yuan
Speaker
Martijn Kool
Time
Thursday, November 23, 2023 4:00 PM - 5:00 PM
Venue
Online
Online
Zoom 638 227 8222 (BIMSA)
Abstract
Building on work of Oh-Thomas, I will introduce invariants for counting surfaces on Calabi-Yau fourfolds. In a family, they are deformation invariant along Hodge loci. If non-zero, the variational Hodge conjecture for the family under consideration holds. Time permitting, I will discuss different compactifications of the moduli spaces of surfaces involved, and some (conjectural) relations under wall-crossing. Joint work with Y. Bae and H. Park.