\documentclass{article}
\usepackage{axiom}
\begin{document}
\title{\$SPAD/src/input matbug.input}
\author{The Axiom Team}
\maketitle
\begin{abstract}
\end{abstract}
\eject
\tableofcontents
\eject
\section{License}
<<license>>=
--Copyright The Numerical Algorithms Group Limited 1996.
@
<<*>>=
<<license>>

msq := Matrix SquareMatrix(2,POLY INT)
m : msq := zero(2,2)
m(1,1) := matrix([[1,2],[a,b]])
m(1,2) := matrix([[a,b],[2,b]])
m(2,2) := matrix([[1,2],[2,b]])
m
m*m
m**2
m**3
(m*m)*m
mm:=m*m
mm*m

@
\eject
\begin{thebibliography}{99}
\bibitem{1} nothing
\end{thebibliography}
\end{document}