2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/159170This early trial has been withdrawn by the author. For a completed and published version cf. arXiv:math/0608597v5.This early trial has been withdrawn by the author. For a completed and published version cf. arXiv:math/0608597v5High Energy Physics - TheoryGeneral Relativity and Quantum Cosmologytext