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Proceedings of the American Mathematical Society
Article . 1969 . Peer-reviewed
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Proceedings of the American Mathematical Society
Article . 1969 . Peer-reviewed
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On Projective Modules of Finite Rank

On projective modules of finite rank
Authors: Wolmer V. Vasconcelos;

On Projective Modules of Finite Rank

Abstract

One of the aims of this paper is to answer the following question: Let R be a commutative ring for which projective ideals are finitely generated; is the same valid in R [x], the polynomial ring in one variable over R? A Hilbert basis type of argument does not seem to lead directly to a solution. Instead we were taken to consider a special case of the following problem: Let (X, Ox) be a prescheme and M a quasi-coherent Ox-module with finitely generated stalks; when is M of finite type? Examples abound where this is not so and here it is shown that a ring for which a projective module with finitely generated localizations is always finitely generated, is precisely one of the kind mentioned above (Theorem 2.1). Such a ring R could also be characterized as "any finitely generated flat module is projective."

Keywords

commutative algebra

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
37
Average
Top 1%
Top 10%
bronze
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