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Gromov-Witten theory of banded gerbes over schemes (1101.5996v2)
Published 31 Jan 2011 in math.AG and math.SG
Abstract: Let $X$ be a smooth complex projective algebraic variety. Let $\mathcal{G}$ be a $G$-banded gerbe with $G$ a finite abelian group. We prove an exact formula expressing genus $g$ orbifold Gromov-Witten invariants of $\mathcal{G}$ in terms of those of $X$.