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math.AG2001
Orbifold Gromov-Witten Theory
Weimin Chen, Yongbin Ruan
In this article, we introduce the notion of good map and use it to establish Gromov-Witten theory for orbifolds.
math.AT2001
A Homotopy Theory of Orbispaces
Weimin Chen
In 1985, physicists Dixon, Harvey, Vafa and Witten studied string theories on Calabi-Yau orbifolds (cf. [DHVW]). An interesting discovery in their paper was the prediction that a c…