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Is there any way to cross-reference to sections/subsections via their title? I find myself writing "Please see section 4 for more details", and it gets annoying very soon, especially when I have to change the numbers repeatedly.

I am using lyx, so it would be nice if there's some way of automating some of the steps.

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following your edit, I have added the lyx tag to your question. Hopefully someone who can help with that part will be along shortly. –  Ian Thompson Apr 29 '11 at 10:39
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1 Answer

Use \label and \ref.

\section{Green's function}
\label{sec:green}

...

\ref{sec:green}.

More details can be found in the Not So Short Introduction to LaTeX2e, which is worth reading.

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