2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/70867We give a counterexample and some conclusions for effective non-vanishing of Weil divisors on algebraic surfaces.7 pagesAlgebraic Geometry14J25; 14J45; 14E30On Effective Non-vanishing of Weil Divisors on Algebraic Surfacestext