2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/142335The virtual cohomology of an orbifold is a ring structure on the cohomology of the inertia orbifold whose product is defined via the pull-push formalism and the Euler class of the excess intersection bundle. In this paper we calculate the virtual cohomology of a large family of orbifolds, including the symmetric product.9 pages: Corrected version. To appear in the Bulletin of the Mexican Mathematical SocietyAlgebraic Topology57R91, 14N35text