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Gerbes and twisted orbifold quantum cohomology

Jianzhong Pan, Yongbin Ruan, Xiaoqin Yin

math.AGarXiv:math/0504369

Abstract

In this article, we construct an orbifold quantum cohomology twisted by a flat gerbe. Then we compute these invariants in the case of a smooth manifold and a discrete torsion on a global quotient orbifold.

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