2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109142This note outlines some first steps in the classification of Fano manifolds for which $c_1^2-2c_2$ is positive or nef.10 pages, posting of older preprintAlgebraic Geometry14J45A note on Fano manifolds whose second Chern character is positivetext