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I would like to use an overbrace, but I do not want how much text I put in the overbrace to affect the spacing of the math (i.e. I don't want the the "a" and the "b" to get further apart in the following example):

$\frac{a-\overbrace{b^d}^{\text{'d' here stands for 'dummy variable', it is not an exponent}}}{c}$

Any ideas? This particular example is pretty silly and I would not do it in practice, but it is just to make things simple.

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2 Answers 2

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3

Depending on the situation, maybe you can use \mathclap from mathtools.

For example,

\documentclass{article}
\usepackage{amsmath}
\usepackage{mathtools}
\begin{document}
  $\frac{a-\overbrace{b^d}^{\mathclap{\text{'d' here stands for 'dummy variable', it is not an exponent}}}}{c}$
\end{document}
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3 
\documentclass{article}
\usepackage{amsmath}
\begin{document}
$
  \frac{a-\overbrace{b^d}^{
    \hidewidth
    \text{'d' here stands for 'dummy variable', it is not an exponent}
    \hidewidth
  }}{c}
$
\end{document}

So, the \hidewidth, well, hides the width.

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1
  • 2
    \text is defined in amstext whis would be automatically loaded by amsmath. It cannot be seen in the question, but the the tag {amsmath} has been used.
    – Stefan Kottwitz ♦
    Feb 20, 2011 at 18:07

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