still relevant info from PluginFormula should be merged to this page
This plugin renders mathematical formulas in wiki pages. The formulas should be written in LaTeX format, simple ones will be in plain html and complex ones will render a graphic. Requires latex installed, or at least path-accessible installed latex, dvips, and Imagemagic's convert.
http://mods.tiki.org/details.php?type=wikiplugins&mod=formula