2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/171347We prove that the linear system of hypersurfaces in P^3 of degree d, 14 <= d <= 40, with double, triple and quadruple points in general position are non-special. This solves the cases that have not been completed in a paper by E. Ballico and M.C. Brambilla.Algebraic Geometry14J17; 14J70text