# [texhax] superposing symbols

E. Krishnan ekmath at md5.vsnl.net.in
Sat Jan 10 05:51:14 CET 2004

On Thu, 8 Jan 2004, Dewey H. Hodges wrote:

> I'm attempting to find out how to use LaTeX to draw a northeast arrow
> through a symbol and have a zero at the tip of the arrow (showing
> that the quantity crossed out is going to zero). I've been
> unsuccessful so far. Can you help?

Here's a trick using pstricks.

\usepackage{pstricks}
....................

\newlength{\symwid}
\newlength{\symht}

\newcommand{\tends}[2]{%
\settowidth{\symwid}{$#1$}
\settoheight{\symht}{$#1$}
\psset{unit=1pt}
\
\rput[l](\the\symwid,\the\symht){\hspace{3pt}#2}
\psline[linewidth=0.25pt]{->}%
(-2,-2)(\the\symwid,\the\symht){#1}}

Now try something like

$\tends{x}{a}$

or

$\tends{\sin x}{0}$

--
Krishnan