V2EX diagonalizable

Diagonalizable

释义 Definition

(线性代数)可对角化的:指一个矩阵或线性变换可以通过相似变换化为对角矩阵(即存在可逆矩阵 \(P\),使 \(P^{-1}AP\) 为对角矩阵)。在这种情况下,许多运算(如幂、函数计算)会更简便。该词也用于更一般的代数结构,但最常见于矩阵与线性算子。

发音 Pronunciation (IPA)

/danlazbl/

例句 Examples

This matrix is diagonalizable, so we can compute its powers quickly.
这个矩阵是可对角化的,所以我们可以很快计算它的幂。

A linear transformation is diagonalizable if there exists a basis of eigenvectors that turns its matrix into a diagonal form.
如果存在线性变换的一组特征向量基,使其矩阵表示变成对角形式,那么该线性变换就是可对角化的。

词源 Etymology

diagonalizable = diagonal(对角的)+ -ize(使成为……)+ -able(能够……的)。其中 diagonal 源自希腊语系词根,含“穿过角/对角线”的意思;整体构词直观表示“能够被变成对角形式的”。

相关词 Related Words

文献作品 Literary / Notable Works

  • Linear Algebra Done Right Sheldon Axler
  • Introduction to Linear Algebra Gilbert Strang
  • Matrix Analysis Roger A. Horn & Charles R. Johnson
  • Linear Algebra Serge Lang
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