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Note to Goto's paper: ''Every noetherian uniformly coherent ring has dimension at most 2'' - MaRDI portal

Note to Goto's paper: ''Every noetherian uniformly coherent ring has dimension at most 2'' (Q790191)

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scientific article; zbMATH DE number 3847540
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English
Note to Goto's paper: ''Every noetherian uniformly coherent ring has dimension at most 2''
scientific article; zbMATH DE number 3847540

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    Note to Goto's paper: ''Every noetherian uniformly coherent ring has dimension at most 2'' (English)
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    1983
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    A commutative ring R is said to be uniformly coherent if for any positive integer n and any nonzero homomorphism \(f:R^ n\to R,\) ker f can be generated by \(\phi\) (n) elements, where \(\phi\) (n) is a nonnegative integer depending only on n. \textit{J. Sally} proved that any two- dimensional Noetherian local ring is uniformly coherent [''Numbers of generators of ideals in local rings'', Lect. Notes Pure Appl. Math. 35 (1978; Zbl 0395.13010)] and \textit{S. Goto} established the converse of this result [J. Math. Kyoto Univ. 23, 269-279 (1983; Zbl 0533.13005)]. In this note, the authors prove that the ideal-adic completion of a Noetherian uniformly coherent ring is uniformly coherent, and then they apply this result to give an alternate proof of the Sally-Goto theorem.
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    uniformly coherent ring
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    two-dimensional, Noetherian ring
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    localling
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    number of generators
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