%% %% An UIT Edition example %% %% Example 06-11-4 on page 106. %% %% 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{375.57637pt} \AtBeginDocument{\setlength\parindent{0pt}} \setcounter{equation}{54} \renewcommand\theequation{6.\arabic{equation}} \StartShownPreambleCommands \usepackage{amsmath} \makeatletter \let\oldTagForm\tagform@ \renewcommand\tagform@[1]{\maketag@@@{\ignorespaces*#1*\unskip\@@italiccorr}} \makeatother \StopShownPreambleCommands \begin{document} \begin{align} c^2 &\le a^2 + b^2\label{eq:pyth0}\\ \left|\sum_{i=1}^n a_ib_i\right| &\le \left(\sum_{i=1}^n a_i^2\right)^{1/2} \left(\sum_{i=1}^n b_i^2\right)^{1/2}\label{eq:pyth1} \end{align} \makeatletter\let\tagform@\oldTagForm\makeatother \begin{align}\label{eq:pyth2} c^2 &\le a^2 + b^2 \end{align} A reference to eq.~\eqref{eq:pyth0}, eq.~\eqref{eq:pyth1} and eq.~\eqref{eq:pyth2}. \end{document}