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 ?
The back substitution, in both methods, involves an upper-triangular matrix with a definite rank structure.
Let the m-th hook sum of an upper-triangular matrix A = [[a.
Equivalently, if an upper-triangular matrix has only the nonzero entries [g.
It has become clear in recent years that the representation theory finite group of unipotent upper-triangular matrix groups Un(q) can lead to a similarly rich combinatorial theory.
An upper-triangular matrix T was constructed as follows.