# [OS X TeX] fractions with arrows

scheissenochmal2003 at yahoo.de scheissenochmal2003 at yahoo.de
Sun Jun 5 12:22:40 CEST 2005

Hi,

quick and dirty, you could try something like

\documentclass{report}
\usepackage{amssymb,graphics}

\begin{document}
\raisebox{-0.4ex}{\scalebox{0.8}{\rotatebox{90}{$\curvearrowleft$}}}
$\frac{A}{B}$
\raisebox{1.6ex}{\scalebox{0.8}{\rotatebox{270}{$\curvearrowleft$}}}
\end{document}

and fiddle around with the sizing and positioning to match the fonts
that you want to use. You need the graphics Package to be able to use
\rotatebox as far as I know.

If you have to use such arrows more regularly, you could also define them:

\newcommand{\curvedarrowbottom}{\raisebox{-0.4ex}{\scalebox{0.8}{\rotatebox{90}{$\curvearrowleft$}}}}
\newcommand{\curvedarrowtop}{\raisebox{1.6ex}{\scalebox{0.8}{\rotatebox{270}{$\curvearrowleft$}}}}

Good luck,
Stephan

Sergei Mariev wrote:

> Dear all,
>
> I am trying to typset a fraction (A on top, B below it) and I want to
> have a curve arrow pointing from B to A on the left side of the fraction
> and from A to B on the right side of the fraction. It can't be a
> straight arrow pointing from top to bottom or the other way around, it
> has to be a curve arrow. Ideally, it should start approximately in the
> middle of the line where A is and end in the middle of the line where B
> is (But bottom of the line to top would do it too)  Is there an easy way
> to do this? I have looked at all possible arrows in all possible math
> styles, the closest thing I found is \curvearrowleft and
> \curvearrowright, but I need "\citvearrowtop" and \"\curvearrowbottom"
> Does such thing exist in one package or other? Have I overlooked
> something? or some other way of doing this?
>
> Thanks a lot!
>
> sergei

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