Small covers over products of a polygon with a simplex

Authors: YANYING WANG, YANCHANG CHEN

Abstract: The equivariant homeomorphism class of an (orientable) small cover over a simple convex polytope P^n bijectively corresponds to the equivalence class of its (orientable) coloring under the action of automorphism group of face poset of P^n. By calculating the number of orbits of group actions we determine the number of equivariant homeomorphism classes of small covers over products of a polygon with a simplex. Moreover, we calculate the number of equivariant homeomorphism classes of all orientable small covers over the product.

Keywords: Small cover, equivariant homeomorphism, polytope, coloring

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