better to have distinguished class for preorders
authorhaftmann
Thu May 07 16:22:34 2009 +0200 (2009-05-07)
changeset 310611d117af9f9f3
parent 31060 75d7c7cc8bdb
child 31062 878e00798148
better to have distinguished class for preorders
src/HOL/Library/Preorder.thy
     1.1 --- a/src/HOL/Library/Preorder.thy	Thu May 07 12:17:17 2009 +0200
     1.2 +++ b/src/HOL/Library/Preorder.thy	Thu May 07 16:22:34 2009 +0200
     1.3 @@ -6,7 +6,7 @@
     1.4  imports Orderings
     1.5  begin
     1.6  
     1.7 -context preorder
     1.8 +class preorder_equiv = preorder
     1.9  begin
    1.10  
    1.11  definition equiv :: "'a \<Rightarrow> 'a \<Rightarrow> bool" where