2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/67064A vanishing theorem is proved for Ext groups over non-commutative graded algebras. Along the way, an "infinite" version is proved of the non-commutative Auslander-Buchsbaum theorem.8 pagesRings and Algebras16E30; 16W50text