Does MathJax support Presentation and/or Content MathML?
MathML comes in two types: Presentation MathML, which describes what an equation looks like, and Content MathML, which describes what an equation means. At the moment, MathJax only works with Presentation MathML. That means that you will need to convert your Content MathML expressions to Presentation MathML before you can display them with MathJax. A good way to do this conversion is with an XSL transformation tool, see for example the web-xslt collection. A more detailed explanation of the difference between Content and Presentation MathML can be found in the module “Presentation MathML Versus Content MathML” at cnx.org.