MathJax Formeln

\(\begin{align}     E \underset{Einstein}{=} m \cdot c^2     \underset{Pythagoras}{=} m \cdot (a^2 + b^2) \end{align}\)

\(\sum_{\substack{ 0<i<m \\ 0<j<n }} P(i,j)\)

\(\begin{eqnarray}    x^2 &=& 2 \\    \to x &=& \pm \sqrt{2} \end{eqnarray}\)