


Algebraic Geometry Seminar
Date:
Thursday, 5 January, 2023, 2.15 pm
Venue:
Ramanujan Hall
Speaker:
Atharva Korde
Affiliation:
Univ. of British Columbia,Vancouver, BC, Canada
Title:
An introduction to GromovWitten and DonaldsonThomas theory
Abstract:
I will give an introduction to GromovWitten invariants (via algebraic geometry, rather than symplectic geometry) and DonaldsonThomas invariants. Then I will explain the GWDT correspondence, which relates these two sets of numbers for a CalabiYau threefold. If time permits, I will talk about quantum cohomology later, an idea of Kontsevich which is used to answer the question of counting the following GWinvariant – how many rational curves of degree d pass through 3d1 general points in the plane ? The first talk will be less technical and accessible to anyway with minimal knowledge of algebraic geometry. The second talk will be more technical.