Transfer of Gorenstein dimensions along ring homomorphisms |
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Authors: | Lars Winther Christensen Sean Sather-Wagstaff |
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Affiliation: | a Department of Mathematics and Statistics, Texas Tech University, Lubbock, TX 79409-1042, USA b Department of Mathematics, NDSU Dept # 2750, PO Box 6050, Fargo, ND 58108-6050, USA |
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Abstract: | A central problem in the theory of Gorenstein dimensions over commutative noetherian rings is to find resolution-free characterizations of the modules for which these invariants are finite. Over local rings, this problem was recently solved for the Gorenstein flat and the Gorenstein projective dimensions; here we give a solution for the Gorenstein injective dimension. Moreover, we establish two formulas for the Gorenstein injective dimension of modules in terms of the depth invariant; they extend formulas for the injective dimension due to Bass and Chouinard. |
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Keywords: | 13D05 13D07 13D25 |
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