V2EX invariant

Invariant

释义 Definition

invariant(形容词/名词):不变的;恒定的(在不同条件下保持不变的性质、规则或量)。常见于数学、物理、计算机与学术写作中。(另有语法学等领域用法,此处取最常见义。)

发音 Pronunciation (IPA)

/nvrint/

例句 Examples

An invariant rule is that you must wear a helmet on site.
一个不变的规定是你在现场必须戴安全帽。

In the proof, we show that this quantity remains invariant under rotation, which makes the solution much simpler.
在这个证明中,我们说明这个量在旋转下保持不变,从而使解法更简单。

词源 Etymology

来自拉丁语前缀 **in-**(“不”)+ variant(“变化的”),字面意思是“不会变化的”。该词后来在数学与科学语境中固定下来,用来指“在变换下保持不变的量/性质”。

相关词 Related Words

文学作品 Literary Works

  • Hermann Hesse《Siddhartha》(常见英文版本中出现 invariant,用于表达“恒常不变”的思想氛围)
  • Aldous Huxley《Brave New World》(一些章节或版本中可见该词,用于描述制度或观念的“固定/不变”特征)
  • 科学与学术经典译写:在英文科学写作中极常见(如讨论“在某种变换下的不变量”),因此也常出现在各类经典教材与论文语境中
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