%%
%% Ein Beispiel der DANTE-Edition
%% Mathematiksatz mit LaTeX
%% 3. Auflage
%% Beispiel 09-27-1 auf Seite 208.
%% Copyright (C) 2018 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
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\documentclass[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{146.40707pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\setcounter{equation}{31}
\renewcommand\theequation{9.\arabic{equation}}
%StartShownPreambleCommands
\usepackage{xypic}
%StopShownPreambleCommands
\begin{document}
\begin{equation}
\xymatrix{%
A\POS[];[d]**\dir{~},[];[dr]**\dir{-} & B & C\\
D & E\POS[];[l]**\dir{.},[];[r]**\dir{~}
& F\POS[];[dl]**\dir{~}\\
G & H & I}
\end{equation}
\end{document}
