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> E.g. \caption{$a+b$} Nope. Can't do it.

I don't disagree in general about some of the flaws of LaTeX, but am I missing something about this one? Using maths in a caption works fine.

Well, it gets funny if you e.g. put math stuff into titles and still want the table of contents of your pdf viewer to work.

hm. i stand corrected. (it has been years since I've used LaTeX)

I just start learning it.