2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59794We prove a representability theorem for moduli functors of framed torsion-free sheaves on nonsingular complex projective surfaces, using formal geometry along a curve in the surface. This has as a consequence that a certain restriction morphism for moduli stacks of sheaves has fibers that are schemes.6 pages, AMSLaTeX, substantially revised and shortened versionAlgebraic Geometry14D22 (Primary) 14D20 (Secondary)text