1)unit lower trian-,单位下三角阵2)a down triangular martrix with the subdigonal elements as 1,次对角元为1的单位下三角阵3)unit upper riangular martrix,单位上三角阵4)unit upper triangular matrix,单位上三角矩阵5)Left upper triangular identity matrix,左上单位三角阵6)unit triangular matrix,单位三角矩阵
用法例句
In this paper the authors discuss the feasibility of making a down triangular martrix with the subdigonal elements as 1 that its singular values are given in advance,and then give its algorithm and an example.
