MathML

MathML is about encoding the structure of mathematical expressions so that they can be displayed, manipulated and shared over the World Wide Web. A carefully encoded MathML expression can be evaluated in a computer algebra system, rendered in a Web browser, edited in your word processor, and printed on your laser printer. Mathematical software vendors are adding MathML support at a rapid pace, and MathML is fast becoming the lingua franca of scientific publication on the Web.

by Robert Miner and Jeff Schaeffer

http://www.dessci.com/en/support/tutorials/mathml/default.htm

MathML code is XML-like, for example:

<math> <mstyle displaystyle='true'> <munderover> <mo>∑</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>0</mn> </mrow> <mi>∞</mi> </munderover> <msub> <mi>x</mi> <mi>i</mi> </msub> </mstyle> </math>