Commutative Noetherian rings possessing a homological property

For a commutative Noetherian local ring A, we have the following proposition: A is aGorenstein ring if and only if for all finitely generated A-modules M, id_AM~-is finite if andonly if pd_AM is finite. Now, we consider the following property: given a Noetherian localring A, for an arbitrary finitel...

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Veröffentlicht in:中国科学通报:英文版 1995 (11), p.886-889
1. Verfasser: 王明生
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Sprache:eng
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Zusammenfassung:For a commutative Noetherian local ring A, we have the following proposition: A is aGorenstein ring if and only if for all finitely generated A-modules M, id_AM~-is finite if andonly if pd_AM is finite. Now, we consider the following property: given a Noetherian localring A, for an arbitrary finitely generated A-module M, id_AM is finite, implying that pd_AMis finite. We ask: what ring is characterized by the above property? In this note, we firstconsider the above question; then for commutative Noetherian ring A (not necessarily lo-
ISSN:2095-9273