2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70223This paper is a gentle introduction to some recent results involving the theory of gerbes over orbifolds for topologists, geometers and physicists. We introduce gerbes on manifolds, orbifolds, the Dixmier-Douady class, Beilinson-Deligne orbifold cohomology, Cheeger-Simons orbifold cohomology and string connections.To appear in the Annales Mathematiques Blaise PascalDifferential GeometryGeometric Topologytext