Triangular Matrix
An upper triangular matrix U is defined by
Written explicitly,
A lower triangular matrix L is defined by
Written explicitly,
See also
Hankel Matrix, Hessenberg Matrix, Hilbert Matrix, Lower Triangular Matrix, Matrix, Strictly Lower Triangular Matrix, Strictly Upper Triangular Matrix, Upper Triangular Matrix, Vandermonde MatrixExplore with Wolfram|Alpha
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References
Ayres, F. Jr. Schaum's Outline of Theory and Problems of Matrices. New York: Schaum, p. 10, 1962.Referenced on Wolfram|Alpha
Triangular MatrixCite this as:
Weisstein, Eric W. "Triangular Matrix." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/TriangularMatrix.html