
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 \(\mathbb{P}^n\).
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
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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