doc-src/TutorialI/Misc/document/fakenat.tex
author wenzelm
Fri, 04 Nov 2011 17:19:33 +0100
changeset 45340 98ec8b51af9c
parent 40406 313a24b66a8d
permissions -rw-r--r--
prefer global Quotient_Info lookup to accomodate Quotient_Term, which is not quite localized yet (cf. 9fd6fce8a230);

%
\begin{isabellebody}%
\def\isabellecontext{fakenat}%
%
\isadelimtheory
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\endisadelimtheory
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\isatagtheory
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\endisatagtheory
{\isafoldtheory}%
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\isadelimtheory
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\endisadelimtheory
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\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}\isamarkupfalse%
\ nat\ {\isaliteral{3D}{\isacharequal}}\ {\isadigit{0}}\ {\isaliteral{7C}{\isacharbar}}\ Suc\ nat%
\isadelimtheory
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\endisadelimtheory
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\isatagtheory
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\endisatagtheory
{\isafoldtheory}%
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\isadelimtheory
%
\endisadelimtheory
\end{isabellebody}%
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