L'application d'évaluation, les groupes de Gotlieb duaux et les cellules terminales

Nous comparons et calculons trois sous-espaces vectoriels remaquables de la cohomologie d'un CW-complexe.We compare three natural subvectorspaces of the cohomology of a simply connected pointed space. These spaces are related to, respectively, the “last cells” of the space, the “dual Gottlieb groups” and the “evaluation map” defined by the Spivak construction.