2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/111527We show that a smooth projective variety admits a Chow-Kunneth decomposition if the cohomology has level at most one except for the middle degree. This can be extended to the relative case in a weak sense if the morphism has only isolated singularities, the base space is 1-dimensional, and the generic fiber satisfies the above condition.12 pagesAlgebraic Geometry14C30text