On the category of modules of Gorenstein dimension zero
On the category of modules of Gorenstein dimension zero
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DOI:
10.1007/s00209-005-0795-8
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发表时间:
2005-05
影响因子:
0.8
通讯作者:
Ryo Takahashi
中科院分区:
文献类型:
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作者:
Ryo Takahashi
LetRbe a commutative noetherian henselian non-Gorenstein local ring of depth zero. Denote by modRthe category of all finitely generatedR-modules, and by the full subcategory of modRconsisting of all R-modules of Gorenstein dimension zero. We prove in this paper that if contains a non-free module, then it is not precovering in modR, in particular, there exist infinitely many isomorphism classes of indecomposableR-modules of Gorenstein dimension zero.