diff -r fc48fe9667f2 -r 2da4fb1894d2 IntEx2.thy
--- a/IntEx2.thy	Sun Dec 06 22:57:44 2009 +0100
+++ b/IntEx2.thy	Sun Dec 06 22:58:03 2009 +0100
@@ -6,6 +6,7 @@
   ("Tools/int_arith.ML")
 begin
 
+
 fun
   intrel :: "(nat \<times> nat) \<Rightarrow> (nat \<times> nat) \<Rightarrow> bool" (infix "\<approx>" 50)
 where