时间：2026年11月3日（周二）15:00-16:00
地点：浙大紫金港海纳苑2幢206室
报告人：上海交通大学 周子浚
报告主题：Degeneration formula for DT4 and cohomological Magnificent Four conjecture
报告摘要：Relative invariants and degeneration formula play an important role in the series of works on Gromov-Witten/Donaldson-Thomas correspondence by MNOP, where the fundamental building blocks are the cases of local curves. In this talk, I will introduce the generalization of this technique to local log CY 4-folds. In particular, it leads to a proof of Nekrasov's formula for degree 0 DT4 invariants. This is joint work with Yalong Cao and Gufang Zhao.
