Speaker: Hsian-Hua Tseng (Ohio State University)

Title: Virasoro constraints for toric bundles

Abstract: Virasoro constraints are conjectural differential equations satisfied by generating functions of descendant Gromov-Witten invariants of Kahler manifolds/orbifolds. In this talk, we will begin with reviewing Givental's formulation of these constraints. We will then discuss the following result, which is a joint work with T. Coates and A. Givental: For a toric bundle E-> B, Virasoro constraints hold for E if and only if they hold for B.