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\hypersetup{pdftitle=Combinations - appendix}
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\begin{document}

\title{Combinations - appendix}
\author{A. U. Thor}
\maketitle
\tableofcontents
\section{\TeX\ definitions}
\begin{statements}
\item $
[ 
\left( \begin{array}{l} 
\mathit{n}
\\ 
\mathit{k}
\end{array}\right)
\stackrel{show}{=} \mbox{`}
\newline \mbox{$\backslash$}left(\linebreak [0]\ \mbox{$\backslash$}begin\{array\}\{l\}\linebreak [0]\ \mbox{'}[\linebreak [0]\ 
\mathit{n}\linebreak [0]\ ]\mbox{`}
\newline \mbox{$\backslash$}\mbox{$\backslash$}\linebreak [0]\ \mbox{'}[\linebreak [0]\ 
\mathit{k}\linebreak [0]\ ]\mbox{`}
\newline \mbox{$\backslash$}end\{array\}\mbox{$\backslash$}right)\mbox{'}
]$
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\end{document}