src/HOL/Library/Countable.thy
changeset 58372 bfd497f2f4c2
parent 58315 6d8458bc6e27
child 58881 b9556a055632
     1.1 --- a/src/HOL/Library/Countable.thy	Thu Sep 18 16:47:40 2014 +0200
     1.2 +++ b/src/HOL/Library/Countable.thy	Thu Sep 18 16:47:40 2014 +0200
     1.3 @@ -7,7 +7,7 @@
     1.4  header {* Encoding (almost) everything into natural numbers *}
     1.5  
     1.6  theory Countable
     1.7 -imports Main Rat Nat_Bijection
     1.8 +imports Old_Datatype Rat Nat_Bijection
     1.9  begin
    1.10  
    1.11  subsection {* The class of countable types *}