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Is there a math mode accent giving an inverted breve? I have tried \stackrel{frown}{x}, but the alignment and spacing are all wrong when compared to \breve{x}.

2 Answers 2

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Using Psirus's idea:

\usepackage[T3,T1]{fontenc}
\DeclareSymbolFont{tipa}{T3}{cmr}{m}{n}
\DeclareMathAccent{\invbreve}{\mathalpha}{tipa}{16}

\begin{document}
$\invbreve{x}$
\end{document}

enter image description here

One has to load fontenc and specify the T3 encoding; if T1 is not desired, say \usepackage[T3,OT1]{fontenc} so as to get OT1 as the default encoding.

4

Check out tables 171, 173, 175 and 176 of »The Comprehensive LaTeX Symbol List«. Note that you have to load the corresponding package (given in the table caption) to make the respective command work.

4
  • Thanks; this solution works, too, but I can only accept one answer and chose egreg's answer because the resulting symbol looks better to me. Jan 15, 2012 at 13:34
  • Personally, I had good success with \wideparen from the MnSymbol package (table 173). Feb 16, 2012 at 7:02
  • I think your list of tables is no longer up to date.
    – shuhalo
    Jun 18, 2023 at 8:27
  • This is a mixed bag. You'd naturally want an accent that looks the same for every single letter, no matter how wide the letter itself is.
    – shuhalo
    Jun 18, 2023 at 8:31

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