Ask HN: A good online refresher for reading Mathematical notation?

Hi all,

Does anyone have any recommendations for a good basic guide to reading mathematical notation?

I've been playing with various things recently and reading a lot of academic papers on various topics such as cellular automata and vision systems and such like. However invariably these papers document their solutions using 'proper' mathematical notation.

While I can understand most of these concepts, I appear to have forgotten what all these squiggly symbols mean. Any suggestions?