src/HOL/Datatype.thy
changeset 21243 afffe1f72143
parent 21126 4dbc3ccbaab0
child 21404 eb85850d3eb7
     1.1 --- a/src/HOL/Datatype.thy	Wed Nov 08 11:23:09 2006 +0100
     1.2 +++ b/src/HOL/Datatype.thy	Wed Nov 08 13:48:29 2006 +0100
     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 NatArith Sum_Type
     1.8 +imports Nat Sum_Type
     1.9  begin
    1.10  
    1.11  typedef (Node)