2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65200The so-called 'change-of-ring' results are well-known expressions which present several connections between projective, injective and flat dimensions over the various base rings. In this note we extend these results to the Gorenstein dimensions over Cohen-Macaulay local rings.27 pagesCommutative Algebra13D05; 13D25text