src/HOL/Library/Countable.thy
changeset 27368 9f90ac19e32b
parent 26585 3bf2ebb7148e
child 27487 c8a6ce181805
--- a/src/HOL/Library/Countable.thy	Thu Jun 26 10:06:54 2008 +0200
+++ b/src/HOL/Library/Countable.thy	Thu Jun 26 10:07:01 2008 +0200
@@ -6,7 +6,7 @@
 header {* Encoding (almost) everything into natural numbers *}
 
 theory Countable
-imports Finite_Set List Hilbert_Choice
+imports Plain List Hilbert_Choice
 begin
 
 subsection {* The class of countable types *}