diff -r 5cd16e4df9c2 -r 6584901d694c doc-src/TutorialI/Misc/document/AdvancedInd.tex --- a/doc-src/TutorialI/Misc/document/AdvancedInd.tex Mon Jun 23 15:26:47 2008 +0200 +++ b/doc-src/TutorialI/Misc/document/AdvancedInd.tex Mon Jun 23 15:26:48 2008 +0200 @@ -319,12 +319,7 @@ \begin{quote} \isacommand{apply}\isa{{\isacharparenleft}induct{\isacharunderscore}tac} $y@1 \dots y@n$ \isa{rule{\isacharcolon}} $r$\isa{{\isacharparenright}} \end{quote} -where $y@1, \dots, y@n$ are variables in the first subgoal. -The conclusion of $r$ can even be an (iterated) conjunction of formulae of -the above form in which case the application is -\begin{quote} -\isacommand{apply}\isa{{\isacharparenleft}induct{\isacharunderscore}tac} $y@1 \dots y@n$ \isa{and} \dots\ \isa{and} $z@1 \dots z@m$ \isa{rule{\isacharcolon}} $r$\isa{{\isacharparenright}} -\end{quote} +where $y@1, \dots, y@n$ are variables in the conclusion of the first subgoal. A further useful induction rule is \isa{length{\isacharunderscore}induct}, induction on the length of a list\indexbold{*length_induct}