INDECOMPOSABLE CANONICAL MODULES AND CONNECTEDNESS
INDECOMPOSABLE CANONICAL MODULES AND CONNECTEDNESS
复制标题
不可分解的规范模块和连通性
DOI:
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发表时间:
2002
期刊:
影响因子:
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通讯作者:
C. Huneke
中科院分区:
文献类型:
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作者:
M. Hochster;C. Huneke
INDECOMPOSABLE CANONICAL MODULESAND CONNECTEDNESSMelvin Hochster and Craig Huneke1. IntroductionThroughout this paper all rings are commutative, with identity, and Noetherian, unlessotherwise specified. In particular, “local ring” always means Noetherian local ring, unlessotherwise specified. Our objective is to prove a generalization of Faltings’ connectednesstheorem [Fal1, Fal2], which asserts that in a complete local domain (R,m,K) of dimensionn, if I ⊆ m is an ideal generated by at most n−2 elements, then the punctured spectrum ofR/I is connected. Our result (see Theorems 3.3and 3.6)draws the same conclusion withoutthe hypothesis that R be a domain: we assume instead that R is complete, equidimensional(i.e., for every minimal prime p of R, dimR/p = dimR), and that one of the followingconditions, which we shall prove are equivalent, holds:a) H