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Article
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MATHEMATICA SCANDINAVICA
Article . 1997 . Peer-reviewed
Data sources: Crossref
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Tensor products of modules, rigidity and local cohomology.

Tensor products of modules, rigidity and local cohomology
Authors: Huneke, Craig; Wiegand, Roger;

Tensor products of modules, rigidity and local cohomology.

Abstract

The present paper is a continuation of the authors' previous paper [\textit{C. Huneke} and \textit{R. Wiegand}, Math. Ann. 299, No. 3, 449-476 (1994; Zbl 0803.13008)]. The authors study rigidity properties of local cohomology and \(\text{Tor}\). Let \(A\) be a local hypersurface domain of dimension \(d\) and \(M\), \(N\) two finitely generated \(A\)-modules. Firstly, the authors show that \(H_{\mathfrak m}^r(M \otimes N) = 0\) for some \(r < d\) implies \(\text{depth } M \otimes N \geq r+1\) -- that is, \(H_{\mathfrak m}^i(M \otimes N) = 0\) for all \(i \leq r\) -- if \(M \otimes N\) satisfies Serre's \((S_{r+1})\)-condition on the punctured spectrum of \(A\), \(M\) and \(N\) have depth at least \(r\) and \(N\) is of finite projective dimension. The rigidity of \(\text{Tor}\) is used to prove this. Secondly the authors apply the theorem above to vector bundles over a regular local ring or on \(\mathbb{P}^n\).

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Germany
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Keywords

Dimension theory, depth, related commutative rings (catenary, etc.), \(S_{r+1}\), vanishing of local cohomology, 510.mathematics, Local cohomology and commutative rings, hypersurface domain, vector bundle, depth of tensor product, Article, Vanishing theorems in algebraic geometry

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selected citations
These citations are derived from selected sources.
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!
43
Top 10%
Top 10%
Average
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bronze