Control the width of an underbrace

Question

I would like to shorten this underbrace so that it terminates directly underneath the vertical bars without extending past them.
Minimal Working Example:
documentclass{report}
newcommand{Underbrace}[2]{{underbrace{#2}_{#1}}}

begin{document}
    [Underbrace{a}{|x+y|}]
end{document}

Bernard · Accepted Answer

You can try one of these solutions – the second is similar to  @Werner's suggestion, with the negative thin spaces compensated with thin spaces befor and after the underbrace:
documentclass{report}
newcommand{Underbrace}[2]{{underbrace{#2}_{#1}}}

begin{document}

[Underbrace{a}{|x+y|} neq |Underbrace{a}{x+y}|neq,Underbrace{a}{!|x+y|!},]

end{document}

Control the width of an underbrace

One Answer

Add your own answers!

Ask a Question