2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/119155A method of computation of its terms is presented together with some stabilization results. As an application a characterization of symplectic harmonic manifolds is given and a relationship with the C-spectral sequence is indicated.8 pages, submitted to Math. DoklSymplectic GeometryGeometric Topology53D05; 55 T05text