triangular matrix,orthogonal matrix

就称为上三角阵(upper triangular matrix),如 5 0 u 0 0 2
该矩阵称为初始中心对组合三角阵(the lower triangular matrix
(c) the upper triangular matrix represents the raw correlation
for standard and generalized triangular sylvester-type matrix
数个三角形矩阵(triangular matrix),依使用目的的不同,可分为几类.