2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65346We give a characterization of irreducible symplectic fourfolds which are given as Hilbert scheme of points on a K3 surface.9 pages. To appear in manuscripta mathematicaAlgebraic Geometry14J32 (Primary), 32Q20 (Secondary)A characterization of certain irreducible symplectic 4-foldstext