%%
%% Ein Beispiel der DANTE-Edition
%% Mathematiksatz mit LaTeX
%% 3. Auflage
%% Beispiel 09-19-10 auf Seite 198.
%% 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
%%
%%
\documentclass[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\AtBeginDocument{\setlength\parindent{0pt}}
%StartShownPreambleCommands
\usepackage{mathtools}
%StopShownPreambleCommands
\begin{document}
\[ A = \begin{multlined}[t]
\framebox[3cm]{Zeile 1} \\ \vdots \\ \framebox[3cm]{Zeile n}
\end{multlined} =
B = \begin{multlined}[c]
\framebox[3cm]{Zeile 1} \\ \vdots \\ \framebox[3cm]{Zeile n}
\end{multlined} =
C = \begin{multlined}[b]
\framebox[3cm]{Zeile 1} \\ \vdots \\ \framebox[3cm]{Zeile n}
\end{multlined} =
D \]
\end{document}
