Take the following matrix
$$A=\begin{bmatrix}0 & 0 & 1 \\ 0 & 2 & 3 \\ 4 & 5 & 6\end{bmatrix}$$
I was wondering if there was a term for these types of "reverse triangular" matrices, and if they hold any properties. I assume they will not enjoy nearly as many properties as ordinary triangular matrices.
