The formulas to calculate the variance of a quadratic form with the matrix composed of submatrices are given in this paper.
给出了由子矩阵组成的分块矩阵时，随机变量二次型的方差、协方差的计算公式。
2
In this paper the algorithms for geometric transformation of image data and the decomposition of the image matrix into submatrices are introduced.
本文提出一种实现图像几何形状变换及图像数据分解成子矩阵的算法和装置。
3
It is proved that the stiffness matrix of the finite element solution is a block diagonal matrix and its elements are some symmetric and block circulant submatrices.