src/HOL/Ring_and_Field.thy
changeset 15131 c69542757a4d
parent 15077 89840837108e
child 15140 322485b816ac
     1.1 --- a/src/HOL/Ring_and_Field.thy	Mon Aug 16 14:21:54 2004 +0200
     1.2 +++ b/src/HOL/Ring_and_Field.thy	Mon Aug 16 14:22:27 2004 +0200
     1.3 @@ -5,7 +5,9 @@
     1.4  
     1.5  header {* (Ordered) Rings and Fields *}
     1.6  
     1.7 -theory Ring_and_Field = OrderedGroup:
     1.8 +theory Ring_and_Field 
     1.9 +import OrderedGroup
    1.10 +begin
    1.11  
    1.12  text {*
    1.13    The theory of partially ordered rings is taken from the books: