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On the canonical element conjecture. II - MaRDI portal

On the canonical element conjecture. II (Q1340932)

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scientific article; zbMATH DE number 704924
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On the canonical element conjecture. II
scientific article; zbMATH DE number 704924

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    On the canonical element conjecture. II (English)
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    21 December 1994
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    [For part I see Trans. Am. Math. Soc. 299, 803-811 (1987; Zbl 0611.13011).] The main two theorems of this paper are the following: Theorem 1. Let \((A,m,k)\) be a noetherian local ring and let \(J_ i = \text{ann}_ A H_ m^{n-i} (A)\). Then for any nonzero \(x \in mJ_ 1J_ 2 \dots J_ r\), \(A/xA\) satisfies the canonical element conjecture (here \(r = \dim A - \text{depth} A)\). Theorem 2. Let \(x_ n \in J_ 1J_ 2 \dots J_ r\). Then for any s.o.p. \(x_ 1, x_ 2, \dots, x_ n\) of \(A\), \(x^ t_ 1, x_ 2^ t, \dots, x^ t_ n + x\) satisfies the canonical element conjecture in \(B = A[[X]]/(X^ 2)\) \((x\) denoting the image of \(X\) in \(B)\) for every positive integer \(t\).
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    formal power series
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    noetherian local ring
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    canonical element conjecture
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