V2EX linearly independent

Linearly Independent

定义 Definition

linearly independent(线性无关):数学/线性代数中指一组向量(或函数、方程等)中,没有任何一个可以用其他向量的线性组合表示。等价地说,若只有把所有系数都取 0 才能得到“线性组合等于 0”,则这组向量线性无关。(该短语在更一般的代数结构中也有类似用法。)

发音 Pronunciation

/lnirli ndpndnt/

例句 Examples

The vectors (1, 0) and (0, 1) are linearly independent.
向量 (1, 0) 和 (0, 1) 是线性无关的。

To solve the system, we first check whether the columns of the matrix are linearly independent, because that determines whether the solution is unique.
为了解这个方程组,我们先检查矩阵的列向量是否线性无关,因为这决定了解是否唯一。

词源 Etymology

linearly 来自 linear(线性的),源于拉丁语 linea(线、绳、线条);independent 来自拉丁语 *in-*(不)+ dependere(依附、悬挂)。组合成 linearly independent,字面意思是“在(线性组合这一)线性的意义下彼此不依赖”,也就是“不能用其他元素的线性组合表示”。

相关词 Related Words

文学与经典著作 Literary Works

  • Sheldon Axler, Linear Algebra Done Right(线性无关、基、维数等概念的核心术语频繁出现)
  • Gilbert Strang, Introduction to Linear Algebra(以几何直观讲解线性无关与列空间/秩的关系)
  • David C. Lay, Linear Algebra and Its Applications(常用于教材体系,线性无关在求解与建模章节反复使用)
  • Shilov, Linear Algebra(偏经典的理论表述中系统使用该术语)
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