%&latex \documentclass[12pt]{article} \usepackage{t1enc} \usepackage[frenchb]{babel} \usepackage{multicol} \catcode`\@=11 \def\Eqalign#1{\null\,\vcenter{\openup\jot\m@th\ialign{ \strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$\hfil &&\quad\strut\hfil$\displaystyle{##}$&$\displaystyle{{}##}$ \hfil\crcr #1\crcr}}\,} \catcode`\@=12 \pagestyle{empty} \begin{document} \input{pytha7.tex.tex} \end{document}