[Tex/LaTex] frown and mathop/stackrel/overset

Question

I need something like \stackrel{\frown}{MM'} to express the fact that MM' is some path. But I am not really satisfied by the look of the result. The \frown is too high. Would you please have a suggestion?

Edit 1: I just discovered that the font I'm using, ie kpfonts, offers a nice widearc command which suits my needs.

Answer 1

You may try \wideparen from the yhmath package:

\usepackage{yhmath}
...
$\wideparen{MM'}$

In case you don't want to change the largesymbol font, it's possible to load only the \wideparen accent:

\documentclass{article}
\DeclareSymbolFont{yhlargesymbols}{OMX}{yhex}{m}{n}
\DeclareMathAccent{\wideparen}{\mathord}{yhlargesymbols}{"F3}

\begin{document}
$\wideparen{MM'}$
\end{document}