changeset 7133 | 64c9f2364dae |
parent 7005 | cc778d613217 |
child 7233 | 75cc3a327bd4 |
--- a/src/HOL/Isar_examples/BasicLogic.thy Fri Jul 30 13:43:26 1999 +0200 +++ b/src/HOL/Isar_examples/BasicLogic.thy Fri Jul 30 13:44:29 1999 +0200 @@ -145,7 +145,7 @@ context again later. *}; theorem conjE: "A & B ==> (A ==> B ==> C) ==> C"; -proof same; +proof -; assume ab: "A & B"; assume ab_c: "A ==> B ==> C"; show C;