% mod_tex: distributed LaTeX-rendering over Apache % Copyright (C) 2007 Peter Danenberg % See doc/COPYING for details. \documentclass[12pt]{article} \usepackage{amsmath,stmaryrd,amssymb} \usepackage{cancel} \usepackage{color} \pagestyle{empty} \begin{document} \begin{displaymath} \sigma_1 = \begin{pmatrix} 0 & 1 \\ 1 & 0 \end{pmatrix} ,\, \sigma_2 = \begin{pmatrix} 0 & -i \\ i & 0 \end{pmatrix} ,\, \sigma_3 = \begin{pmatrix} 1 & 0 \\ 0 & -1 \end{pmatrix} \,. \end{displaymath} \end{document}