THE COHOMOLOGY RING OF ORBIT SPACES OF FREE -ACTIONS ON SOME DOLD MANIFOLDS

Abstract

We determine the possible $\mathbb{Z}_{2}$-cohomology rings of orbit spaces of free actions of $\mathbb{Z}_{2}$ (or fixed point free involutions) on the Dold manifold $P(1,n)$, where $n$ is an odd natural number.