2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60402We express the Aomoto trilogarithm explicitely via classical trilogarithm and investigate the algebraic-geometric structures behind this: different realuzations of the weight three motivic complexes. Using this results we give an explicit motivic construction of the Grassmannian 4-logarithm and Borel regulator map for K_7(C).This is a paper from the proceedings of Jerusalem conference on RegulatorsAlgebraic Geometrytext