Highly Influential

Gromov-Witten invariants of a symplectic manifold are a count of holomorphic curves. We describe a formula expressing the GW invariants of a symplectic sum X#Y in terms of the relative GW invariants of X and Y . This formula has several applications to enumerative geometry. As one application, we obtain new relations in the cohomology ring of the moduli… (More)

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