2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/63262In this paper we give a direct geometric proof of the fact that tensoring with the Tate motive in the triangulated category of effective motives DM is a full embedding. The main part of the proof is given in the context of schemes of finite type over a noetherian base scheme.Algebraic GeometryAlgebraic TopologyK-Theory and Homologytext