2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70025We establish a striking connection between Abramovich's and Vistoli's twisted bundles and Gieseker vector bundles. This note grew out of an attempt to understand a recent draft of Seshadri.19 pages. Some minor mistakes have been corrected. Some proofs addedAlgebraic Geometry14H60; 14A20text