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arXiv 2402.06273math.ACmath.RA
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交换 isoartinian 环的刻画与例子

Characterization and examples of commutative isoartinian rings

Asghar Daneshvar, Kamran Divaani-Aazar

AI总结:

本文证明了 isoartinian 环的 Krull 维数至多为 1,并据此将其刻画为六类特定环的有限直积,同时给出了相关例子。

摘要:

Noetherian 环在交换代数、代数数论和代数几何中发挥了基础作用。与其对偶的 Artinian 环一起,它们有许多推广,包括 isonoetherian 和 isoartinian 环的概念。在本文中,我们证明了每个 isoartinian 环的 Krull 维数至多为 1。然后我们利用这一结果给出了 isoartinian 环的刻画。具体而言,我们证明了一个环 $R$ 是 isoartinian 的当且仅当 $R$ 唯一同构于有限个以下类型环的直积:(i) Artinian 局部环;(ii) 具有幂零极大理想的非 Noetherian isoartinian 局部环;(iii) 非域主理想整环;(iv) 满足 $\Min A$ 为单元素集且 $\Min A \subsetneq \Ass A$ 的 Noetherian isoartinian 环 $A$;(v) 满足 $\Min A$ 为单元素集且 $\Min A \subsetneq \Ass A$ 的非 Noetherian isoartinian 环 $A$;(vi) $\Min A$ 中存在唯一非极大元素且 $\Min A=\Ass A$ 的非 Noetherian isoartinian 环 $A$。本文还提供了这些类型环的若干例子。

英文摘要:

Noetherian rings have played a fundamental role in commutative algebra, algebraic number theory, and algebraic geometry. Along with their dual, Artinian rings, they have many generalizations, including the notions of isonoetherian and isoartinian rings. In this paper, we prove that the Krull dimension of every isoartinian ring is at most one. We then use this result to provide a characterization of isoartinian rings. Specifically, we prove that a ring $R$ is isoartinian if and only if $R$ is uniquely isomorphic to the direct product of a finite number of rings of the following types: (i) Artinian local rings; (ii) non-Noetherian isoartinian local rings with a nilpotent maximal ideal; (iii) non-field principal ideal domains; (iv) Noetherian isoartinian rings $A$ with $\Min A$ being a singleton and $\Min A \subsetneq \Ass A$; (v) non-Noetherian isoartinian rings $A$ with $\Min A$ being a singleton and $\Min A \subsetneq \Ass A$; (vi) non-Noetherian isoartinian rings $A$ with a unique element in $\Min A$ that is not maximal, and $\Min A=\Ass A$. Several examples of these types of rings are also provided.

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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