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arXiv 1209.2991math.AC
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一维坏Noether域

One-dimensional bad Noetherian domains

Bruce Olberding

摘要:

局部诺特域作为簇的点的局部环或在代数数论的背景下出现是解析非分歧的,这意味着它们的完备化没有非平凡的幂零元幂零元。然而,看看其他地方,许多来源的分析分歧当地诺特域已展出在过去的七十五年。我们给出了一个统一的方法,一些这样的例子,通过描述类的DVR发生的解析分歧的局部诺特域的规范化,以及一些不发生这样的规范化。我们参数化这些例子,或至少大类,其中使用模块的凯勒微分相关的域扩张。

英文摘要:

Local Noetherian domains arising as local rings of points of varieties or in the context of algebraic number theory are analytically unramified, meaning their completions have no nontrivial nilpotent elements. However, looking elsewhere, many sources of analytically ramified local Noetherian domains have been exhibited over the last seventy five years. We give a unified approach to a number of such examples by describing classes of DVRs which occur as the normalization of an analytically ramified local Noetherian domain, as well as some that do not occur as such a normalization. We parameterize these examples, or at least large classes of them, using the module of Kähler differentials of a relevant field extension.

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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