2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/172267We study the so-called K-positive linear maps from B(L) into B(H) for finite dimensional Hilbert spaces L and H and give characterizations of the dual cone of the cone of K-positive maps. Applications are given to decomposable maps and PPT-states.Operator AlgebrasMathematical Physics46L99text