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单词 square matrix
释义

square matrix

英汉-汉英词典
矩形矩阵,方阵
词组 | 习惯用语
您要查找的是不是:
    real square matrix 实方阵
    hermite square matrix hermite方阵
    invertible square matrix 可逆方阵
    exact square matrix 完全平方矩阵
    square matrix trace 方阵的迹
    nonnegative square matrix 非负不可约方阵
    nonsingular square matrix 非奇异阵
    similar square matrix 相似方阵
square matrix 矩形矩阵,[数] 方阵
原声例句
Linear algebra

Next video, by popular request, will be a brief footnote about non square matrices.

下一个视频 根据大家的要求 将是一个关于非方阵的简短脚注。

Linear algebra

But several commenters have asked about non square matrices, so I thought I'd take a moment to just show what those mean geometrically.

但是有几个评论者问了关于非方阵的问题 所以我想我应该花点时间来说明这些矩阵在几何上的含义。

中文百科

方块矩阵

方块矩阵,或简称方阵,是行数及列数皆相同的矩阵。由n \times n\,矩阵组成的集合,连同矩阵加法和矩阵乘法,构成环。除了n=1\,,此环并不是交换环。

M(n, R),即实方块矩阵环,是个实有单位的结合代数。M(n, C),即复方块矩阵环,则是复结合代数。

单位矩阵I_n\,的对角线全是1而其他位置全是0,对所有m \times n\,矩阵M\,n \times k\,矩阵N\,都有MI_n=M\,I_nN=N\,。 例如,若n=3\,

单位矩阵是方块矩阵环的单比特。

方块矩阵环的可逆元称为可逆矩阵非奇异方阵n \times n\,矩阵A\,是可逆当且仅当存在矩阵B\,使得

此时B\,称为A\,逆矩阵,并记作 A^{-1}\,。 所有n\times n\,矩阵在乘法上组成一个群(亦是一个李群),称为一般线性群。

若数字\lambda\,和非零矢量\vec v\,满足A\vec v=\lambda\vec v\,,则\vec v\,A\,的一个特征矢量,\lambda\,是其对应的特征值。数字\lambda\,A\,的特征值当且仅当A-\lambda I_n\,可逆,又当且仅当p_A(\lambda)=0\,。这里,p_A(x)\,A\,的特征多项式。特征多项式是一个n\,次多项式,有n\,个复根(考虑重根),即A\,n\,个特征值。

英语百科

Square matrix 方块矩阵

A square matrix of order 4. The entries aii form the main diagonal of a square matrix. For instance, the main diagonal of the 4-by-4 matrix above contains the elements a11 = 9, a22 = 11, a33 = 4, a44 = 10.
A linear transformation on R2 given by the indicated matrix. The determinant of this matrix is −1, as the area of the green parallelogram at the right is 1, but the map reverses the orientation, since it turns the counterclockwise orientation of the vectors to a clockwise one.

In mathematics, a square matrix is a matrix with the same number of rows and columns. An n-by-n matrix is known as a square matrix of order n. Any two square matrices of the same order can be added and multiplied.

Square matrices are often used to represent simple linear transformations, such as shearing or rotation. For example, if R is a square matrix representing a rotation (rotation matrix) and v is a column vector describing the position of a point in space, the product Rv yields another column vector describing the position of that point after that rotation. If v is a row vector, the same transformation can be obtained using vR, where R is the transpose of R.

近义、反义、联想词
近义词
n.
matrix

英英词典
square matrix n.
  1. a matrix with the same number of rows and columns
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更新时间:2025/6/20 10:35:21