src/HOL/ex/Puzzle.thy
changeset 16417 9bc16273c2d4
parent 14126 28824746d046
child 17388 495c799df31d
     1.1 --- a/src/HOL/ex/Puzzle.thy	Fri Jun 17 11:35:35 2005 +0200
     1.2 +++ b/src/HOL/ex/Puzzle.thy	Fri Jun 17 16:12:49 2005 +0200
     1.3 @@ -8,7 +8,7 @@
     1.4  Proof due to Herbert Ehler
     1.5  *)
     1.6  
     1.7 -theory Puzzle = Main:
     1.8 +theory Puzzle imports Main begin
     1.9  
    1.10  consts f :: "nat => nat"
    1.11