%% %% Ein Beispiel der DANTE-Edition %% Mathematiksatz mit LaTeX %% 2. Auflage %% %% Beispiel 10-03-2 auf Seite 216. %% %% Copyright (C) 2012 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{352.81416pt} \AtBeginDocument{\setlength\parindent{0pt}} \setcounter{equation}{1} \renewcommand\theequation{10.\arabic{equation}} \StartShownPreambleCommands \usepackage{amsmath} \StopShownPreambleCommands \begin{document} $$\begin{array}{rcl} \underline{RS} & = & \left(\begin{array}{*8c} 01 & a4 & 55 & 87 & 5a & 58 & db & 9e\\ a4 & 56 & 82 & f3 & 1e & c6 & 68 & e5\\ 02 & a1 & fc & c1 & 47 & ae & 3d & 19\\ a4 & 55 & 87 & 5a & 58 & db & 9e & 03 \end{array}\right)\\~\\ \left(\begin{array}{c} s_{i,0}\\ s_{i,1}\\ s_{i,2}\\ s_{i,3} \end{array}\right) & = & \underline{RS} \cdot \left(\begin{array}{c} m_{8i+0}\\ m_{8i+1}\\ \cdots\\ m_{8i+6}\\ m_{8i+7} \end{array}\right)\\~\\ S_{i} & = & \sum_{j=0}^{3}s_{i,j}\cdot2^{8j}\qquad i=0,1,...,k-1\\ S & = & \left(S_{k-1},S_{k-2},...,S_{1},S_{0}\right) \end{array}$$ \end{document}