%% %% The LaTeX Companion, 2ed (second printing August 2004) %% %% Example 8-2-15 on page 477. %% %% Copyright (C) 2004 Frank Mittelbach, Michel Goossens, %% Johannes Braams, David Carlisle, and Chris Rowley %% %% 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. %% \documentclass{ttctexamargin} \pagestyle{empty} \setcounter{page}{6} \setlength\textwidth{231.0pt} \StartShownPreambleCommands \usepackage{amsmath} \StopShownPreambleCommands \begin{document} This example has two column-pairs. \renewcommand\minalignsep{0pt} \begin{align} \text{Compare } x^2 + y^2 &= 1 & x^3 + y^3 &= 1 \\ x &= \sqrt {1-y^2} & x &= \sqrt[3]{1-y^3} \end{align} This example has three column-pairs. \renewcommand\minalignsep{15pt} \begin{flalign} x &= y & X &= Y & a &= b+c \\ x' &= y' & X' &= Y' & a' &= b \\ x + x' &= y + y' & X + X' &= Y + Y' & a'b &= c'b \end{flalign} \end{document}