doc-src/TutorialI/Rules/Force.thy
changeset 16417 9bc16273c2d4
parent 11456 7eb63f63e6c6
child 42637 381fdcab0f36
--- a/doc-src/TutorialI/Rules/Force.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/doc-src/TutorialI/Rules/Force.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -1,5 +1,5 @@
 (* ID:         $Id$ *)
-theory Force = Main: 
+theory Force imports Main begin 
   (*Use Divides rather than Main to experiment with the first proof.
     Otherwise, it is done by the nat_divide_cancel_factor simprocs.*)