--- a/doc-src/TutorialI/Misc/document/case_exprs.tex Tue Aug 16 13:42:21 2005 +0200
+++ b/doc-src/TutorialI/Misc/document/case_exprs.tex Tue Aug 16 13:42:23 2005 +0200
@@ -1,7 +1,20 @@
%
\begin{isabellebody}%
\def\isabellecontext{case{\isacharunderscore}exprs}%
-\isamarkupfalse%
+%
+\isadelimtheory
+%
+\endisadelimtheory
+%
+\isatagtheory
+%
+\endisatagtheory
+{\isafoldtheory}%
+%
+\isadelimtheory
+%
+\endisadelimtheory
+\isamarkuptrue%
%
\isamarkupsubsection{Case Expressions%
}
@@ -64,10 +77,16 @@
distinction over all constructors of the datatype suffices. This is performed
by \methdx{case_tac}. Here is a trivial example:%
\end{isamarkuptext}%
-\isamarkuptrue%
+\isamarkupfalse%
\isacommand{lemma}\ {\isachardoublequote}{\isacharparenleft}case\ xs\ of\ {\isacharbrackleft}{\isacharbrackright}\ {\isasymRightarrow}\ {\isacharbrackleft}{\isacharbrackright}\ {\isacharbar}\ y{\isacharhash}ys\ {\isasymRightarrow}\ xs{\isacharparenright}\ {\isacharequal}\ xs{\isachardoublequote}\isanewline
+%
+\isadelimproof
+%
+\endisadelimproof
+%
+\isatagproof
\isamarkupfalse%
-\isacommand{apply}{\isacharparenleft}case{\isacharunderscore}tac\ xs{\isacharparenright}\isamarkupfalse%
+\isacommand{apply}{\isacharparenleft}case{\isacharunderscore}tac\ xs{\isacharparenright}\isamarkuptrue%
%
\begin{isamarkuptxt}%
\noindent
@@ -79,9 +98,15 @@
\end{isabelle}
which is solved automatically:%
\end{isamarkuptxt}%
+\isamarkupfalse%
+\isacommand{apply}{\isacharparenleft}auto{\isacharparenright}%
+\endisatagproof
+{\isafoldproof}%
+%
+\isadelimproof
+%
+\endisadelimproof
\isamarkuptrue%
-\isacommand{apply}{\isacharparenleft}auto{\isacharparenright}\isamarkupfalse%
-\isamarkupfalse%
%
\begin{isamarkuptext}%
Note that we do not need to give a lemma a name if we do not intend to refer
@@ -102,8 +127,19 @@
\isa{xs} in the goal.
\end{warn}%
\end{isamarkuptext}%
-\isamarkuptrue%
-\isamarkupfalse%
+%
+\isadelimtheory
+%
+\endisadelimtheory
+%
+\isatagtheory
+%
+\endisatagtheory
+{\isafoldtheory}%
+%
+\isadelimtheory
+%
+\endisadelimtheory
\end{isabellebody}%
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