Testing place for math 443 repo.
how does $\LaTeX$ work in md files? Can we use $\int_a^bf(x)dx$ wihout issue? How large a collection of commands? Do we have $\mathbb{R}$? Does centering work to get us
$$A =
\begin{bmatrix}
0&0&1\
0&0&\hdots\
\vdots&0&1\ddots
\end{bmatrix}.$$
$$A = \begin{bmatrix}0&0&1 \\ 0&0&1 \\ 1&0&1 \end{bmatrix}.$$
$A = \begin{bmatrix}0&0&1\0&0&1\1&0&1\end{bmatrix}.$