报告题目: Integral structures of quantum cohomology and HMS for toric varieties
报告人: Bohan Fang
报告人单位: Peking University
报告时间: 2018年12月13日（周四） 16:00-17:00
Abstract: Using recent techniques of Ganatra-Pardon-Shende, one can identify certain partially wrapped Fukaya category of a cotangent bundle with microlocal sheaves. Since vanishing thimbles of the LG mirror for a toric varieties are in this category, one may consider the integration on the thimbles by computation on the characteristic cycles. On one hand it is equal to certain g=0 1-descendant GW potential, while on the other hand it has a nice asymptotic expansion. This implies the Gamma II conjecture of Galkin-Golyshev-Iritani, which is about the integral structures of GW theory and their asymptotic expansion.