2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/109027The paper presents a proof of the Hodge Riemann relations for the combinatorial intersection cohomology of a polytope, as fist given by K.Karu, in terms of geometric operations on polytopes.29 pagesAlgebraic Geometry14M25, 52B20text