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arXiv math/0211172math.AC
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不可分解标准模与连通性

Indecomposable canonical modules and connectedness

Melvin Hochster, Craig Huneke

摘要:

本文的目的是证明Faltings连通性定理的一个推广,该定理断言:对于n维完备局部区域R,如果理想I至多由n-2个元素生成,则R/I的穿孔谱是连通的。我们用R的典范模不可分解的要求代替R是整环的条件。我们还研究了正则模不可分解的等价条件,在较弱的条件下,这等价于局部环的S_2-化是局部的。

英文摘要:

The purpose of this paper is to prove a generalization of Faltings' connectedness theorem which asserts that, for a complete local domain R of dimension n, the punctured spectrum of R/I is connected if the ideal I is generated by at most n-2 elements. We replace the condition that R be a domain by the requirement that the canonical module of R be indecomposable. We also study equivalent conditions for the canonical module to be indecomposable; under mild conditions this is equivalent to the S_2-ification of the local ring to be local.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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