src/HOL/BNF_Cardinal_Order_Relation.thy

--- a/src/HOL/BNF_Cardinal_Order_Relation.thy	Thu Mar 06 14:14:54 2014 +0100
+++ b/src/HOL/BNF_Cardinal_Order_Relation.thy	Thu Mar 06 14:15:09 2014 +0100
@@ -8,7 +8,7 @@
 header {* Cardinal-Order Relations as Needed by Bounded Natural Functors *}
 
 theory BNF_Cardinal_Order_Relation
-imports BNF_Constructions_on_Wellorders
+imports Zorn BNF_Constructions_on_Wellorders
 begin
 
 text{* In this section, we define cardinal-order relations to be minim well-orders