\chapter{Number theory}
\label{chap:Number theory}

TODO

\vspace{1cm}
\minitoc


\newpage
\section{Odd or even}
\label{sec:Odd or even}

TODO % zodd zeven zodd_nonzero zeven_nonzero


\newpage
\section{Signum}
\label{sec:Signum}

TODO % zsignum zzero


\newpage
\section{Greatest common divisor}
\label{sec:Greatest common divisor}

TODO % zgcd


\newpage
\section{Primality test}
\label{sec:Primality test}

TODO % zptest