20

I'd like to extend an arrow to allow better readability of characters which are overset using \overset{}{}.

Right now I have

 \overset{k_1}{\rightleftharpoons}

which produces:

alt text

and this leaves the subscript awfully close the to harpoon arrow. Thus, is there anyway to just extend the character length?

23

There are several packages supporting extensible arrows:

An example suitable for your formula, also demonstrating the optional argument for text under the arrows:

\documentclass{article}
\usepackage{mathtools}
\begin{document}
\[ \xrightleftharpoons[k_2]{\,k_1\,} \]
\end{document}

Output:

result

  • Thank you, that solves the problem exactly. I've never used mathtools before. – EricR Nov 11 '10 at 21:18

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