Zaks' lemma for coherent rings

Zaks' lemma for coherent rings
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相干环的扎克斯引理

DOI:
10.1007/s10468-012-9376-9
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发表时间:
2012
期刊:
Algebr. Represent. Theory (to appeal). Online First
影响因子:
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通讯作者:
M. Hoshino and H. Koga
M. Hoshino and H. Koga
中科院分区:
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文献类型:
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作者:
K. Fukumuro;T. Inagawa and Koji Nishida;酒井文雄;M. Hoshino and H. Koga

文献摘要

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设Abe为左、右凝聚环,CA分别为右的最小共发电机(分别,左)A模。我们证明了当平坦模dimCA< ∞且且且当且仅当凸表示的右A-模有界Gorenstein维数。
LetAbe a left and right coherent ring andCA(resp.,) a minimal cogenerator for right (resp., left)A-modules. We show thatwhenever flat dimCA< ∞ and, and thatif and only if the finitely presented rightA-modules have bounded Gorenstein dimension.