2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63428This work is devoted to an intrinsic cohomology theory of Koszul-Vinberg algebras and their modules. Our results may be regarded as improvements of the attempt by Albert Nijenhuis in [NA]. The relationships between the cohomology theory developed here and some classical problems are pointed out, e.g. extensions of algebras and modules, and deformation theory. The real Koszul-Vinberg cohomology of locally flat manifolds is initiated. Thus regarding the idea raised by M. Gerstenhaber we can state : The category of KV-algebras has its proper cohomology theory.Differential Geometry55N35, 53B05, 22E65text