2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/143269Under mild conditions on the space X, we describe the additive structure of the integral cohomology of the space $X^p \times_{C_p}EC_p$ in terms of the cohomology of X. We give weaker results for other similar spaces, and deduce various corollaries concerning the cohomology of finite groups.Group TheoryAlgebraic Topology20J06text