diff -r b3bb2bad952f -r 129caba33c03 Quot/QuotMain.thy
--- a/Quot/QuotMain.thy	Sat Jan 09 09:38:34 2010 +0100
+++ b/Quot/QuotMain.thy	Mon Jan 11 00:31:29 2010 +0100
@@ -107,7 +107,7 @@
 lemmas [id_simps] =
   fun_map_id[THEN eq_reflection]
   id_apply[THEN eq_reflection]
-  id_def[THEN eq_reflection, symmetric]
+  (*id_def[THEN eq_reflection, symmetric]*)
   id_o[THEN eq_reflection]
   o_id[THEN eq_reflection]
   eq_comp_r