2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78962We exhibit examples of projective varieties with degenerate Gauss mappings and determine numerical invariants of such varieties. Our examples provide counter-examples to an asserted structure theorem of Griffiths and Harris (Ann. Sci. ENS 1979).3 pagesAlgebraic GeometryDifferential Geometrytext