Title. Ruan’s conjecture on singular symplectic flops

Time: Thursday Nov. 29, 10:00-12:00.

Venue: Room 09 at Quan-Zhai (全斋), Beijing International Center for Mathematical Research, Peking University.

Speaker: Dr. Xiaobin Li (Southwest Jiaotong University).

Abstract. In this talk, we show that if X and Y are symplectic flops of each other, then their orbifold Ruan cohomology rings are isomorphic. This is a joint work with B.Chen, A. Li and G. Zhao.