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arxiv: 0807.0706 · v4 · submitted 2008-07-04 · 🧮 math.AC

Transfer of Gorenstein dimensions along ring homomorphisms

classification 🧮 math.AC
keywords gorensteindimensiondimensionsinjectiveformulasmodulesproblemrings
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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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