changeset 11602 | bf6700f4c010 |
parent 11493 | f3ff2549cdc8 |
child 11777 | b03c8a3fcc6d |
--- a/src/HOL/Product_Type.thy Thu Sep 27 22:22:08 2001 +0200 +++ b/src/HOL/Product_Type.thy Thu Sep 27 22:22:58 2001 +0200 @@ -96,21 +96,15 @@ (** unit **) -global - typedef unit = "{True}" proof show "True : ?unit" by blast qed -consts - "()" :: unit ("'(')") - -local - -defs - Unity_def: "() == Abs_unit True" +constdefs + Unity :: unit ("'(')") + "() == Abs_unit True"