Answer to Question #272515 in Linear Algebra for Mecko

Question

the upper triangular n x n matrices with no zeros on the diagonal

Answer 1

Upper Triangular Matrix is square matrix in which all the entries below the main diagonal are zero.

example:

$\begin{pmatrix} 1 & 4& 5\\ 0 & 2&6\\ 0 & 0&3 \end{pmatrix}$