2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66338In this paper we define a notion of gerbed tower, and use this notion to give a geometric representation of cohomological classes.We define our main construction using 2-categories. We define non commutative cohomology sets. To appear in the African Diaspora Journal of MathematicsCategory Theorytext