F-rational rings and the integral closures of ideals. II (Q2741181)

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scientific article; zbMATH DE number 1642427
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F-rational rings and the integral closures of ideals. II
scientific article; zbMATH DE number 1642427

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    18 August 2002
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    integral closure
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    tight closure
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    characteristic \(p\)
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    F-rational rings
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    F-regular rings
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    history of the Briançon-Skoda theorems
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    F-rational rings and the integral closures of ideals. II (English)
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    [For part I of this paper see \textit{I. M. Aberbach} and \textit{C. Huneke}, Mich. Math. J. 49, No. 1, 3-11 (2001; Zbl 1016.13003).]NEWLINENEWLINENEWLINEThe main results are new extensions of the Briançon-Skoda theorem with coefficients for F-rational rings. These currently best versions for F-rational rings are still weaker than the known versions for regular rings. The main methods of the proofs come from the theory of tight closure. The last section contains a version of the cancellation theorem for Cohen-Macaulay rings. Corollaries are further versions of the Briançon-Skoda theorem for excellent weakly F-regular rings. NEWLINENEWLINENEWLINEThe second section of the paper gives a comprehensive history of the Briançon-Skoda theorems.NEWLINENEWLINEFor the entire collection see [Zbl 0964.00058].
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