V2EX invertible

Invertible

释义 Definition

可逆的;可倒置的;(尤指数学中)可求逆的。常见于线性代数中,指一个矩阵存在“逆矩阵”,与之相乘可得到单位矩阵。(在一般语境中也可指“可以翻转/倒过来”的物体。)

发音 Pronunciation (IPA)

/nvtbl/

例句 Examples

An invertible matrix has an inverse.
可逆矩阵有一个逆矩阵。

If the transformation is invertible, you can recover the original data from the output, which is crucial in many encryption methods.
如果这种变换是可逆的,你就能从输出中恢复原始数据,这在许多加密方法中至关重要。

词源 Etymology

来自拉丁语词根 **invert-**(意为“颠倒、翻转”,由 in- “向内/相反” + vertere “转”构成),加上形容词后缀 -ible(表示“能够……的”),整体意思就是“能够被倒转/能够被反向操作的”。

相关词 Related Words

文学作品 Literary Works

  • 《Linear Algebra Done Right》(Sheldon Axler):讨论线性变换、矩阵与“可逆(invertible)”等核心概念。
  • 《Introduction to Linear Algebra》(Gilbert Strang):以大量例子讲解可逆矩阵、行列式与解线性方程组的关系。
  • 《Finite-Dimensional Vector Spaces》(Paul R. Halmos):在向量空间与线性算子框架下使用“invertible”讨论可逆算子与结构性质。
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