This is a test post to check that math formulae render correctly.
Here is an inline formula: $E = mc^2$
Here is the quadratic formula:
\[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]
And here is Euler’s identity, often called the most beautiful equation in mathematics:
\[e^{i\pi} + 1 = 0\]