V2EX cauchy

Cauchy

定义 Definition

Cauchy(多用于数学语境)指法国数学家奥古斯丁-路易柯西(Augustin-Louis Cauchy)相关的概念、定理或对象。常见搭配有:Cauchy sequence(柯西序列)Cauchy criterion(柯西判别法/准则)Cauchy-Schwarz inequality(柯西施瓦茨不等式)等。(在不同领域也可能有其他以“Cauchy”命名的术语。)

发音 Pronunciation

/koi/

词源 Etymology

来自人名 Cauchy,源于19世纪法国数学家 Augustin-Louis Cauchy。他对微积分严格化、实分析与复分析的发展影响深远,因此许多核心概念以其姓氏命名。

例句 Examples

This sequence is Cauchy.
这个序列是柯西的(是柯西序列)。

In a complete metric space, every Cauchy sequence converges, which is fundamental in real analysis.
在完备度量空间中,每个柯西序列都收敛,这在实分析中是基础性结论。

相关词 Related Words

文学与著作例证 Literary Works

  • Augustin-Louis Cauchy, Cours d’Analyse de l’cole Royale Polytechnique(1821):系统引入并推动了分析的严格化,“Cauchy”相关概念在此类经典分析著作脉络中频繁出现。
  • G. H. Hardy, A Course of Pure Mathematics:讨论极限、收敛与相关判别法时常出现“Cauchy criterion / Cauchy sequence”。
  • Walter Rudin, Principles of Mathematical Analysis:以“Cauchy sequence”“Cauchy criterion”等为核心工具建立实分析基础。
  • Walter Rudin, Real and Complex Analysis:在更高阶分析框架中继续大量使用“Cauchy”命名的概念与定理(如复分析中的柯西积分公式等)。
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