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arXiv 2406.02503math.AC
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整环中的原子性

Atomicity in integral domains

Jim Coykendall, Felix Gotti

AI总结:

本文综述了可消去交换幺半群和整环的原子性基本结果,重点探讨了原子性与主理想升链条件(ACCP)的联系,以及局部化、多项式扩张等代数构造下的原子性,并利用同调代数技术衡量准原子和几乎原子整环与原子整环的距离。

摘要:

在代数中,原子性研究的是被原子整除以及分解为原子(也称为不可约元)的性质。在原子性范畴的一端,我们发现了反物质代数结构,其内部不存在原子,因此无法进行被原子整除和分解为原子的操作。在范畴的另一端(更有趣的一端),我们发现了原子代数结构,其中基本上每个元素都能分解为原子(对此类对象的研究被称为分解理论)。在本文中,我们综述了关于可消去交换幺半群和整环原子性的一些最基本结果,并将重点放在后者。我们主要探讨原子整环的领域。对于整环而言,作为原子整环与满足主理想升链条件(简称 ACCP,这是一个更强且性质更好的代数条件)之间的区别是微妙的,因此原子性通常与 ACCP 联系在一起研究:我们在本综述的许多部分都考察了这种联系。我们讨论了在各种经典代数构造下的原子性,包括局部化、多项式扩张、$D+M$ 构造和幺半群代数。还讨论了其所有子环都是原子整环的整环。在最后一节中,我们探索了原子性范畴的中间地带:一些整环中部分但并非所有元素都能分解为原子,这被称为准原子和几乎原子。最后,我们提供了同调代数的技术,以衡量准原子和几乎原子整环距离成为原子整环有多远。

英文摘要:

In algebra, atomicity is the study of divisibility by and factorizations into atoms (also called irreducibles). In one side of the spectrum of atomicity we find the antimatter algebraic structures, inside which there are no atoms and, therefore, divisibility by and factorizations into atoms are not possible. In the other (more interesting) side of the spectrum, we find the atomic algebraic structures, where essentially every element factors into atoms (the study of such objects is known as factorization theory). In this paper, we survey some of the most fundamental results on the atomicity of cancellative commutative monoids and integral domains, putting our emphasis on the latter. We mostly consider the realm of atomic domains. For integral domains, the distinction between being atomic and satisfying the ascending chain condition on principal ideals, or ACCP for short (which is a stronger and better-behaved algebraic condition) is subtle, so atomicity has been often studied in connection with the ACCP: we consider this connection at many parts of this survey. We discuss atomicity under various classical algebraic constructions, including localization, polynomial extensions, $D+M$ constructions, and monoid algebras. Integral domains having all their subrings atomic are also discussed. In the last section, we explore the middle ground of the spectrum of atomicity: some integral domains where some of but not all the elements factor into atoms, which are called quasi-atomic and almost atomic. We conclude providing techniques from homological algebra to measure how far quasi-atomic and almost atomic domains are from being atomic.

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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