doc-src/TutorialI/Misc/document/fakenat.tex
author obua
Thu, 07 Jul 2005 19:01:04 +0200
changeset 16743 21dbff595bf6
parent 13791 3b6ff7ceaf27
child 17056 05fc32a23b8b
permissions -rw-r--r--
1) all theorems in Orderings can now be given as a parameter 2) new function Theory.defs_of 3) new functions Defs.overloading_info and Defs.is_overloaded

%
\begin{isabellebody}%
\def\isabellecontext{fakenat}%
\isamarkupfalse%
%
\begin{isamarkuptext}%
\noindent
The type \tydx{nat} of natural
numbers is predefined to have the constructors \cdx{0} and~\cdx{Suc}.  It  behaves as if it were declared like this:%
\end{isamarkuptext}%
\isamarkuptrue%
\isacommand{datatype}\ nat\ {\isacharequal}\ {\isadigit{0}}\ {\isacharbar}\ Suc\ nat\isamarkupfalse%
\isamarkupfalse%
\end{isabellebody}%
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