MathJax is a JavaScript engine for displaying math in web browsers. With just a small script plus a minor modification to a couple of template configuration files, you can enjoy beautiful math formulae (using either TeX/LaTeX or AsciiMath notation) in your JSPWiki pages:

Math formulae displayed in a JSPWiki page

MathJax in JSPWiki is only supported when using the Haddock template. Documentation on enabling MathJax for JSPWiki is here, and information on how to use JSPWiki markup with MathJax is here.