2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54394We study non-local realizations of extended worldsheet supersymmetries and the associated space-time supersymmetries which arise under a T-duality transformation. These non-local effects appear when the supersymmetries do not commute with the isometry with respect to which T-duality is performed.6 pages, Latex, Talk presented at the Workshop on Strings, Gravity and Related Topics, Trieste, 29-30 June 1995High Energy Physics - Theorytext