lower triangular matrix [数] 下三角形矩阵 ; 下三角矩阵 ; 角阵
unit lower triangular matrix 单位下三角阵
strictly lower triangular matrix 严格下三角矩阵
upper lower triangular matrix 上三角阵
lower-triangular matrix 下三角形矩阵
lower triangular infinite matrix 下三角无穷矩阵
elementary lower triangular matrix 初等下三角矩阵
lower-triangular matrix decomposition 下三角分解
lower r triangular matrix 下三角形矩阵
This paper constructs irregular LDPC codes of unequal error protection with a parity check matrix in a lower triangular.
采用了近似下三角校验阵的形式，构造了一类具有不等错误保护的非规则ldpc码。
A substance is through the primary transformation into an upper triangular matrix, the transformation matrix is a unit lower triangular matrix.
实质上是将A通过初等行变换变成一个上三角矩阵，其变换矩阵就是一个单位下三角矩阵。
The name of it comes from the lower-triangular form of system matrix in state-space equations when it is linear.
这一名称来源于下三角结构线性系统写成状态空间表达式后，系统矩阵中所表现出的下三角形状；
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