2

I am aware of questions/answers that address the question of space around the equal-sign (e.g. this one or this other question).
However, my question is related to a situation where I make use of \underbrace:

equation with space

The text in \underbrace causes a shift to the right of everything outside of the braces.
I do not want to introduce a linebreak in the text, nor do I want to extend the underbrace - I just do not like the large gap in the equation.
I have tried \! without significant effect.
How do I move the portion to the right of the braces so that it is partially above the text?
(Have I missed something in the mathtools package documentation?)

This portion of code reproduces the equation above: 

\begin{equation}  
\underbrace{\left(\frac{\vec{\omega}\cdot\vec{v}}{\vec{v}\cdot\vec{v}}\right)}_%
  {\text{projection of }\vec{\omega}\text{ on }\vec{v}}\vec{v}=%
  \frac{\xi_{\text{s}}}{v_{\text{s}}}\vec{v}
\end{equation}
Community
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Schorsch
  • 585

1 Answers1

5

Try this, using the mathtoolspackage and its \mathclapcommand:

        \documentclass[12pt]{article}
        \usepackage[utf8]{inputenc}
        \usepackage[T1]{fontenc}
        \usepackage{lmodern}
        \usepackage{mathtools}

        \begin{document}%

        \begin{equation}
        \underbrace{\left(\frac{\vec{\omega}\cdot\vec{v}}{\vec{v}\cdot\vec{v}}\right)}%
          {\mathclap{\text{projection of }\vec{\omega}\text{ on }\vec{v}}}\vec{v}=%
          \frac{\xi_{\text{s}}}{v_{\text{s}}}\vec{v}
        \end{equation}

        \end{document}

which gives: enter image description here

Bernard
  • 271,350