This is a post that I can edit with Mathjax later.

Inline equations like in overleaf: $e^{i\pi} + 1 = 0$

And display equations too:

$$\int_{-\infty}^{\infty} e^{-x^2} dx = \sqrt{\pi}$$

Pictures (add in github repo images folder):

Continue with more mathematical content...

How many Beatles does it take to change a lightbulb?

Four.

$$(i\hbar \gamma^\mu \partial_\mu - mc)\psi = 0$$