V2EX principal ideal domain

Principal Ideal Domain

释义 Definition(中文)

主理想整环:一种整环(没有零因子、可交换且有单位元的环),其中每个理想都能由单个元素生成,即任意理想都形如 \((a)\)。常缩写为 PID。在代数数论与交换代数中非常重要。

发音 Pronunciation(IPA)

/prnspl adil domen/

例句 Examples

A principal ideal domain is an integral domain in which every ideal is generated by one element.
主理想整环是一种整环,其中每个理想都由一个元素生成。

Over a principal ideal domain, every finitely generated module decomposes into a direct sum of cyclic modules.
在主理想整环上,每个有限生成模都可以分解为若干个循环模的直和。

词源 Etymology(中文)

该术语由三部分构成:principal(“主要的、首要的”,这里指“由一个主元生成”)、ideal(“理想”,在环论中指一种特殊子集结构)、domain(“整环”之意)。合起来强调:这是一个“整环”,并且其中的“理想”都具有“由一个元素生成”的性质,因此译作“主理想整环”。

相关词 Related Words

文学与经典著作 Literary Works(出现示例)

  • Abstract Algebra(Dummit & Foote)在理想、PID与模分解章节中系统讨论。
  • Algebra(Serge Lang)以更抽象的方式使用PID处理结构定理等主题。
  • Introduction to Commutative Algebra(Atiyah & Macdonald)在交换代数框架下提及PID与其性质、例子与对比。
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