author nipkow Wed, 14 Mar 2001 18:40:01 +0100 changeset 11206 5bea3a8abdc3 parent 11205 67cec35dbc58 child 11207 08188224c24e
*** empty log message ***
 doc-src/TutorialI/Misc/document/simp.tex file | annotate | diff | comparison | revisions doc-src/TutorialI/Misc/simp.thy file | annotate | diff | comparison | revisions doc-src/TutorialI/todo.tobias file | annotate | diff | comparison | revisions
--- a/doc-src/TutorialI/Misc/document/simp.tex	Wed Mar 14 17:38:49 2001 +0100
+++ b/doc-src/TutorialI/Misc/document/simp.tex	Wed Mar 14 18:40:01 2001 +0100
@@ -123,7 +123,17 @@
Both \isa{{\isacharparenleft}no{\isacharunderscore}asm{\isacharunderscore}simp{\isacharparenright}} and \isa{{\isacharparenleft}no{\isacharunderscore}asm{\isacharunderscore}use{\isacharparenright}} run forever on
the problematic subgoal above.
Note that only one of the modifiers is allowed, and it must precede all
-other arguments.%
+other arguments.
+
+\begin{warn}
+Assumptions are simplified in a left-to-right fashion. If an
+assumption can help in simplifying one to the left of it, this may get
+overlooked. In such cases you have to rotate the assumptions explicitly:
+\isacommand{apply}\isa{{\isacharparenleft}rotate{\isacharunderscore}tac}~$n$\isa{{\isacharparenright}}\indexbold{*rotate_tac}
+causes a cyclic shift by $n$ positions from right to left, if $n$ is
+positive, and from left to right, if $n$ is negative.
+Beware that such rotations make proofs quite brittle.
+\end{warn}%
\end{isamarkuptext}%
%
\isamarkupsubsubsection{Rewriting with Definitions%
--- a/doc-src/TutorialI/Misc/simp.thy	Wed Mar 14 17:38:49 2001 +0100
+++ b/doc-src/TutorialI/Misc/simp.thy	Wed Mar 14 18:40:01 2001 +0100
@@ -121,6 +121,16 @@
the problematic subgoal above.
Note that only one of the modifiers is allowed, and it must precede all
other arguments.
+
+\begin{warn}
+Assumptions are simplified in a left-to-right fashion. If an
+assumption can help in simplifying one to the left of it, this may get
+overlooked. In such cases you have to rotate the assumptions explicitly:
+\isacommand{apply}@{text"(rotate_tac"}~$n$@{text")"}\indexbold{*rotate_tac}
+causes a cyclic shift by $n$ positions from right to left, if $n$ is
+positive, and from left to right, if $n$ is negative.
+Beware that such rotations make proofs quite brittle.
+\end{warn}
*}

subsubsection{*Rewriting with Definitions*}
--- a/doc-src/TutorialI/todo.tobias	Wed Mar 14 17:38:49 2001 +0100
+++ b/doc-src/TutorialI/todo.tobias	Wed Mar 14 18:40:01 2001 +0100
@@ -57,8 +57,6 @@