All datatypes now require Arith.
--- a/src/HOL/Induct/Comb.thy Fri May 23 09:17:26 1997 +0200
+++ b/src/HOL/Induct/Comb.thy Fri May 23 09:18:06 1997 +0200
@@ -13,7 +13,7 @@
*)
-Comb = Trancl +
+Comb = Arith +
(** Datatype definition of combinators S and K, with infixed application **)
datatype comb = K