triangular matrix

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triangular matrix

[trī′aŋ·gyə·lər ′mā·triks]
(mathematics)
A matrix where either all entries above or all entries below the principal diagonal are zero.
References in periodicals archive ?
A is called triangular NSM if it is either neutrosophic soft upper triangular or neutrosophic soft lower triangular matrix.
A is a lower triangular matrix with ones on the main diagonal, while [SIGMA] is a diagonal matrix.
where L is a lower triangular matrix and Q is a unitary matrix.
3) The OIRF recursively identifies the structural shocks by using the Choleski decomposition factor of the covariance matrix, which yields a unique lower triangular matrix.
Use the permutation matrices to reduce the matrix into a lower triangular matrix.
Where L is lower triangular matrix and U is upper triangular matrix.
T--is a lower triangular matrix, whose non-zero elements are ones,
A lower triangular matrix is said to be factorable if each entry [a.
Instead, the lower triangular matrix is determined from the upper triangular part.
1]), where T is the unique lower triangular matrix with positive diagonal such that TT' = [[SIGMA].