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 ?
1 [less than or equal to] i, j [less than or equal to] n] be a unit triangular matrix diagonally dominant by columns (resp.
When T is a unit triangular matrix diagonally dominant by columns and using [[kappa].