2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63658We give a geometrical characterization of the ideal of quadrics containing a canonical curve with an involution. This implies to study involutions of rational normal scrolls and Veronese surfaces.20 pagesAlgebraic GeometryPrimary, 14H37; Secondary, 14H30, 14J26text