Mathematics – Algebraic Geometry
Scientific paper
2000-05-31
Mathematics
Algebraic Geometry
Revised version
Scientific paper
In this article, we study the twisting procedure of orbifold cohomology. We
introduce local system and construct twisted orbifold cohomology. Then, we
generalize Vafa-Witten's notion of discrete torsion to general orbifold and
examine its relation to local system. Finally, some examples are computed.
Ruan Yongbin
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