2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54994In the Brans-Dicke(BD) theory on $M_{4}\times Z_{2}$ geometry the geometrical meaning of the torsion is clarified. The BD theory on $M_{4}\times Z_{2}$ is rederived by taking into account of a new isometry condition.17 pages, LaTeX, no figuresHigh Energy Physics - TheoryScalar-Tensor Theory of Gravity on $M_4\times Z_{2}$ Geometrytext