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src/HOL/NatDef.thy
changeset 10212 33fe2d701ddd
parent 8943 a4f8be72f585
child 10832 e33b47e4246d 
--- a/src/HOL/NatDef.thy	Thu Oct 12 18:09:06 2000 +0200
+++ b/src/HOL/NatDef.thy	Thu Oct 12 18:38:23 2000 +0200
@@ -8,7 +8,7 @@
 Type nat is defined as a set Nat over type ind.
 *)
 
-NatDef = WF +
+NatDef = Wellfounded_Recursion +
 
 (** type ind **)
isabelle