Hello, world
A first post, with some math to confirm LaTeX rendering works.
Inline: the Pythagorean identity is $a^2 + b^2 = c^2$.
Display:
$$ \int_{-\infty}^{\infty} e^{-x^2} , dx = \sqrt{\pi} $$
And a matrix:
$$ \begin{pmatrix} 1 & 0 \ 0 & 1 \end{pmatrix} $$