Internet Explorer does not support MathML (used here for equations) and has severely broken support for other Web Standards like CSS2 and XHTML.

Most Web designers have bent over backwards to shelter you from the failings of this wretched browser. I have not.

Aside from the equations, many things on these pages will render poorly or not at all in IE. If they do, I'm sorry, but I ain't gonna “fix it.”

MathML support can be obtained with the aid of a new plugin. For the rest, you need to get yourself a Standards-Compliant browser, like Mozilla.