2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/74908We prove a non-vanishing theorem of the cohomology H^0 of the adjoint divisor K_X + L' where L' is the round up of a nef and big Q-divisor L.Journal of Algebra, to appear (17 pages)Algebraic Geometrytext