2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79652Simple examples are given of bundles on Calabi-Yau 3-folds satisfying 8 out of 9 conditions required for a realistic compactification of string theory to 4 dimensions.Corrections to published versionAlgebraic GeometryHigh Energy Physics - Theory14J32text