We use the technique of Ruan (1999) and Li and Ruan (2001) to construct the virtual neighborhoods and show that the Gromov-Witten invariants can be defined as integrals over the top strata of the virtual neighborhoods. We prove that the invariants defined in this way satisfy all the axioms of Gromov-Witten invariants summarized by Kontsevich and Manin (1994).
机构:
HSE Univ, Fac Math, Moscow, Russia
Skolkovo Inst Sci & Technol, Igor Krichever Ctr Adv Studies, Moscow, Russia
P G Demidov Yaroslavl State Univ, Yaroslavl, RussiaHSE Univ, Fac Math, Moscow, Russia