Wall-Crossings in Toric Gromov-Witten Theory I: Crepant Examples

Tom Coates, Hiroshi Iritani, Hsian-Hua Tseng

Let X be a Gorenstein orbifold and let Y be a crepant resolution of X. We state a conjecture relating the genus-zero Gromov--Witten invariants of X to those of Y, which differs in…