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\title{%\includegraphics[scale=0.5]{isabelle_hol} \\[4ex]
Defining Nonprimitively (Co)recursive Functions in Isabelle/HOL}
\author{Jasmin Christian Blanchette, Aymeric Bouzy, \\
Andreas Lochbihler, Andrei Popescu, and \\
Dmitriy Traytel}
\urlstyle{tt}
\begin{document}
\maketitle
\begin{sloppy}
\begin{abstract}
\noindent
This tutorial describes the definitional package for nonprimitively corecursive functions
in Isabelle/HOL. The following commands are provided:
\keyw{corec}, \keyw{corecursive}, \keyw{friend\_of\_corec}, and \keyw{coinduction\_\allowbreak upto}.
They supplement \keyw{codatatype}, \keyw{primcorec}, and \keyw{primco\-rec\-ur\-sive}, which
define codatatypes and primitively corecursive functions.
\end{abstract}
\end{sloppy}
\tableofcontents
\input{Corec.tex}
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\end{document}