On Auslander's n-gorenstein rings
On Auslander's n-gorenstein rings
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DOI:
10.1016/0022-4049(95)00003-8
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发表时间:
1996-01
影响因子:
0.8
通讯作者:
Y. Iwanaga;Hideo Sato
中科院分区:
文献类型:
--
作者:
Y. Iwanaga;Hideo Sato
According to Auslander, a Noetherian ring R is called n-Gorenstein for n ≥ 1 if in a minimal injective resolution 0 →RR → E0→ E1→ … → En→, …, the flat dimension of each Eiis at most i for i = 0, 1, …, n − 1. We prove that for an n-Gorenstein ring R of self-injective dimension n, the last term Enin a minimal injective resolution ofRR has essential socle. We also prove that the 1-Gorenstein property is inherited by a maximal quotient ring, and as a related result, we characterize a Noetherian ring of dominant dimension at least 2.