GTM seminar

Speaker: Yalong Cao (Kavli IPMU)
Title: Gopakumar-Vafa type invariants for Calabi-Yau 4-folds
Date (JST): Thu, Oct 29, 2020, 15:30 - 17:00
Place: Zoom
Related File: 2606.pdf
Abstract: Gopakumar-Vafa type invariants on Calabi-Yau 4-folds (which are non-trivial only for genus zero and one) are defined by Klemm-Pandharipande from Gromov-Witten theory, and their integrality is conjectured. In this talk, I will explain how to give a sheaf theoretical interpretation of them using counting invariants on moduli spaces of one dimensional stable sheaves. Based on joint works with D. Maulik and Y. Toda.
Remarks: There will be subsequent three unofficial talks on Nov. 4 15:30-17:00, Nov. 5 10:30-12:00, 15:30-17:00 with the same Meeting id, passcode. Title/abstract will be sent by the mailing list.