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How to write math

You can just type LaTeX formulas between dollar signs! There are still some bugs with the preview; see the FAQ for details. Basic solution: if you're having problems with the preview (or the post looks wrong), put backticks around any math that contains underscores or asterisks. E.g. write `$f'_n=g_{n+1}$`.

Since jsMath does take some time to render mathematical markup (for some people it's quite slow), please consider using basic HTML and HTML symbols for simple formulas whenever possible, like &lambda;<sup>1</sup>&notin; &#8484;<sub>p</sub> to get λ¹ ∉ ℤ_p.