%%
%% Ein Beispiel der DANTE-Edition
%%
%%
%% Copyright (C) 2010 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{166.324pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pst-node}
\StopShownPreambleCommands
\begin{document}
$\psmatrix[mnode=dia,colsep=1cm]
& [mnode=circle] X \\
Y & Z
\endpsmatrix \psset{nodesep=3pt,arrows=->}
\ncline{1,2}{2,1} \ncline{1,2}{2,2}
\ncline[linestyle=dotted]{2,1}{2,2}$
\end{document}
