src/HOL/Datatype.thy
changeset 26748 4d51ddd6aa5c
parent 26356 2312df2efa12
child 27104 791607529f6d
     1.1 --- a/src/HOL/Datatype.thy	Thu Apr 24 16:53:04 2008 +0200
     1.2 +++ b/src/HOL/Datatype.thy	Fri Apr 25 15:30:33 2008 +0200
     1.3 @@ -9,7 +9,7 @@
     1.4  header {* Analogues of the Cartesian Product and Disjoint Sum for Datatypes *}
     1.5  
     1.6  theory Datatype
     1.7 -imports Finite_Set
     1.8 +imports Finite_Set Wellfounded
     1.9  begin
    1.10  
    1.11  lemma size_bool [code func]: