We have updated the forum software and added support for \(\TeX\)-MathJax in your posts.
The update should fix a few issues, e.g. the BBCode buttons.
Benjamin
PS: \[\sum_{k=1}^n k = \frac{n(n+1)}{2}\]
Code: Select all
\( tex-inlineMath \)
\[ tex-displayMath \]