2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/206558We discuss the resolution of toroidal orbifolds. For the resulting smooth Calabi-Yau manifolds, we calculate the intersection ring and determine the divisor topologies. In a next step, the orientifold quotients are constructed.LaTeX, 105 pp, some figuresHigh Energy Physics - Theorytext