
  %-------------------------------------------------%
  \subsubsection{\texttt{http://www.openmath.org/cd/alg1.ocd}} 
  
  A CD of basic algebraic concepts At present this CD only holds definitions of zero and one. They are deliberately defined here without specifying any particular structure (e.g. a group) to which they correspond. 

\begin{tabular}{|l|r|r|}
\hline
  \symbolrow{alg1:zero}{constant}{} \\ 
\hline
  \symbolrow{alg1:one}{constant}{} \\ 
\hline
  
\end{tabular}
