A lower triangular matrix having 0s along the diagonal as well as the upper portion, i.e., a matrix
![A=[a_(ij)]](/images/equations/StrictlyLowerTriangularMatrix/Inline1.svg)
such that 
for 
. Written explicitly,
![L=[0 0 ... 0; a_(21) 0 ... 0; | | ... 0; a_(n1) a_(n2) ... 0].](/images/equations/StrictlyLowerTriangularMatrix/NumberedEquation1.svg) |
Strictly Lower Triangular Matrix
See also
Lower Triangular Matrix, Strictly Upper Triangular Matrix, Triangular MatrixExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Strictly Lower Triangular Matrix." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/StrictlyLowerTriangularMatrix.html