Orbifold上的群作用(英文)

Group actions on orbifolds

Orbifold及其上的twisted sectors被称为stringy orbifold.近年来陈伟民和阮勇斌教授发展了一种新的orbifold上同调理论.作者研究了stringy orbifold上的群作用并以该理论为基础给出弦等变上同调.

An orbifold is called ＂stringy orbifold＂ if we refer it as the orbifold itself with its twisted sectors. Recently, Chen and Ruan have developed a new cohomology theory of orbifolds. In this paper, the group action on stringy orbifolds is studied and the stringy equivariant cohomology group is obtained based on their theory.