src/HOL/Library/Product_ord.thy
changeset 30738 0842e906300c
parent 28562 4e74209f113e
child 31040 996ae76c9eda
     1.1 --- a/src/HOL/Library/Product_ord.thy	Fri Mar 27 10:05:08 2009 +0100
     1.2 +++ b/src/HOL/Library/Product_ord.thy	Fri Mar 27 10:05:11 2009 +0100
     1.3 @@ -1,12 +1,11 @@
     1.4  (*  Title:      HOL/Library/Product_ord.thy
     1.5 -    ID:         $Id$
     1.6      Author:     Norbert Voelker
     1.7  *)
     1.8  
     1.9  header {* Order on product types *}
    1.10  
    1.11  theory Product_ord
    1.12 -imports Plain
    1.13 +imports Main
    1.14  begin
    1.15  
    1.16  instantiation "*" :: (ord, ord) ord