2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69784We construct for an equivariant cohomology theory for proper equivariant CW-complexes an equivariant Chern character, provided that certain conditions about the coefficients are satisfied. These conditions are fulfilled if the coefficients of the equivariant cohomology theory possess a Mackey structure. Such a structure is present in many interesting examples.30 pagesGeometric Topology55N91text