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

Right now I have


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?

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up vote 15 down vote accepted

There are several packages supporting extensible arrows:

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

\[ \xrightleftharpoons[k_2]{\,k_1\,} \]



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

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