Lassueur, Caroline2012-01-242012-01-242012-01-24201310.1016/j.jpaa.2012.04.003https://infoscience.epfl.ch/handle/20.500.14299/77117WOS:000309699500012The aim of this paper is to construct an equivalent of the Dade group of a p-group for an arbitrary finite group G, whose elements are equivalences classes of endo-p-permutation modules. To achieve this goal we use the theory of relative projectivity with respect to a module and that of relative endotrivial modules.Dade groupendo-p-permutation modulesendotrivial modulesrelative endotrivial modulesrelative projectivity with respect to modulestext::journal::journal article::research article