2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/138488Let $G = \ZZ_p$, $p$ an odd prime, act freely on a finite-dimensional CW-complex $X$ with mod $p$ cohomology isomorphic to that of a lens space $L^{2m-1} (p;q_1,...,q_m)$. In this paper, we determine the mod $p$ cohomology ring of the orbit space $X/G$, when $p^2\nmid m$.6 pagesAlgebraic Topology55R20, 57S17text