Higher triangular should be interpreted as getting only zero entries under the main diagonal, which commences on the higher still left corner. Illustration[edit] During the reduce triangular matrix all features earlier mentioned the diagonal are zero, inside the higher triangular matrix, all the elements underneath the diagonal are zero. http://crotchlesstights67.fitnell.com/33083408/details-fiction-and-how-t-u-an-l-b-d