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The finiteness of the Gorenstein dimension for Artin algebras

机译:Artin代数的Gorenstein维度的有限度

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In [A. Skowronski, S. Smalo and D. Zacharia, On the finiteness of the global dimension for Artinian rings, J. Algebra 251(1) (2002) 475-478], the authors proved that an Artin algebra A with infinite global dimension has an indecomposable module with infinite projective and infinite injective dimension, giving a new characterization of algebras with finite global dimension. We prove in this paper that an Artin algebra A that is not Gorenstein has an indecomposable A-module with infinite Gorenstein projective dimension and infinite Gorenstein injective dimension, which gives a new characterization of algebras with finite Gorenstein dimension. We show that this gives a proper generalization of the result in [A. Skowronski, S. Smalo and D. Zacharia, On the finiteness of the global dimension for Artinian rings, J. Algebra 251 (1) (2002) 475-478] for Artin algebras.
机译:在一个。 Skowronski,S. Smalo和D. Zacharia,关于Artinian戒指的全球维度的有限性,J.代数251(1)(2002)475-478]证明了一个有无限全球维度的Artin代数A有一个 具有无限投影和无限注射尺寸的不可分解模块,提供了具有有限全球维度的代数的新表征。 我们在本文中证明了不是Gorenstein的Artin代数A.具有无限的Gorenstein投影尺寸和无限Gorenstein注射尺寸的不可分离的A模块,其具有有限的Gorenstein尺寸的代数的新表征。 我们表明这在[A. Skowronski,S. Smalo和D. Zacharia,用于Artin代数的Artinian Rings的全球范围的有限性,J.代数251(1)(2002)475-478。

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