There are a lot of things that make diagonal matrices much nicer to work with.
有很多东西可以使对角矩阵更好地工作。
Diagonal matrices
原声例句
Linear algebra
中文百科
对角矩阵 Diagonal matrix
（重定向自Diagonal matrices）
对角矩阵（英语：diagonal matrix）是一个主对角线之外的元素皆为0的矩阵。对角在线的元素可以为0或其他值。因此n行n列的矩阵
= (di,j)若符合以下的性质：
则矩阵为对角矩阵。
英语百科
Diagonal matrix 对角矩阵
（重定向自Diagonal matrices）
In linear algebra, a diagonal matrix is a matrix (usually a square matrix) in which the entries outside the main diagonal (↘) are all zero. The diagonal entries themselves may or may not be zero. Thus, the matrix D = (di,j) with n columns and n rows is diagonal if:
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