V2EX determinant

Determinant

定义 Definition

determinant(名词):
1)(数学)行列式:由矩阵元素按特定规则计算得到的一个数,用于判断矩阵是否可逆、求解线性方程组等。
2)(较常见一般义)决定因素:对结果起关键作用的因素。(此义也常用 determining factor 表达)

发音 Pronunciation (IPA)

/dtmnnt/

例句 Examples

The determinant of this matrix is zero.
这个矩阵的行列式等于零。

In linear algebra, a nonzero determinant indicates the transformation is invertible, which becomes a crucial determinant of whether the system has a unique solution.
在线性代数中,非零行列式表明该变换可逆,这也成为判断该方程组是否有唯一解的关键决定因素。

词源 Etymology

来自拉丁语 determinare,意为“限定、确定、使有结论”,由 *de-*(加强/彻底)+ terminare(设定界限,源自 terminus“界限、终点”)构成。英语中先发展出“决定、确定”的意义;数学上的 determinant 则指“用于确定某些性质的量”,后来专指矩阵的“行列式”。

相关词 Related Words

文学作品 Literary Works

  • A Tale of Two Cities(Charles Dickens):determinant 作为“决定因素/起决定作用的事物”这一类抽象用法常见于19世纪叙事与议论文体(不同版本与语境中出现频率不一)。
  • The Origin of Species(Charles Darwin):在论证链条中常见“决定性的因素/条件”这类表达(具体用词随版本可能有所差异)。
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