V2EX ascending chain condition

Ascending Chain Condition

定义 Definition

Ascending chain condition(上升链条件,简称 ACC):在某个带有“包含/小于等于”等关系的结构中,任何不断“越来越大”的链(如集合按包含递增、理想按包含递增、元素按序递增)都会在有限步后稳定下来,即从某一步起不再严格变大。
在代数里最常见的表述是:一个环满足 ACC(常指对理想满足 ACC)意味着不存在无限严格递增的理想链;这与“诺特性(Noetherian)”密切相关。

发音 Pronunciation (IPA)

/snd ten kndn/

例句 Examples

The ring satisfies the ascending chain condition on ideals.
这个环满足关于理想的上升链条件。

If a module satisfies the ascending chain condition on submodules, then every increasing sequence of submodules eventually stabilizes, which is a key finiteness property used in proofs.
如果一个模对其子模满足上升链条件,那么任何递增的子模序列最终都会稳定下来;这是证明中常用的一种关键“有限性”性质。

词源 Etymology

该短语由三部分组成:ascending(上升的、递增的) + chain(链,指按某种关系可比较的序列) + condition(条件)。它源自序理论与抽象代数中的标准术语,用来表达“不能无限严格递增,最终会停住”的性质;与之相对的是 descending chain condition(下降链条件,DCC)

相关词 Related Words

文学与名著中的用例 Literary Works

  • Introduction to Commutative Algebra(Atiyah & Macdonald)
  • Algebra(Serge Lang)
  • Abstract Algebra(Dummit & Foote)
  • Commutative Algebra with a View Toward Algebraic Geometry(Eisenbud)
  • An Introduction to Homological Algebra(Rotman)
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