In my old post Web Browsers can’t Read XSL, I found WebKit engine is not ready for Mathematical Markup Language (MathML by W3C). Tested on Chromium, Google Chrome, Epiphany (based on GNOME GTK+ and WebKit), Midori (based on GTK+ and WebKit), and Arora (based on Qt and WebKit) web browsers. You may check it on Safari, Konqueror (in Linux), and Rekonq (based on WebKit in KDE) also. Currently, MathML is not the first-class citizen in WebKit development, comparing to HTML5.
But finally, MathML will be available on Webkit-based browsers.
Just as with SVG, we would like to work on making improvements to our DOM and reconciling with the KDOM work that has been done for KSVG2 so that SVG and MathML can share some of the same compound document infrastructure (and also to ensure that a MathML implementation can be shared between KDE and OS X).
More information about this project is provided on the MathML Wiki page.
Welcome WebKit and MathML.