supported by the National Natural Science Foundation of China(No.11371118);the Specialized Research Fund for the Doctoral Program of Higher Education(No.20121303110004);the Natural Science Foundation of Hebei Province(No.A2011205075)
A small cover is a closed manifold M^n with a locally standard (Z2)^n-action such that its orbit space is a simple convex polytope P^n. Let A^n denote an n-simplex and P(m) an m-gon. This paper gives formulas for ...