src/HOL/MicroJava/BV/Product.thy
changeset 16417 9bc16273c2d4
parent 15613 ab90e95ae02e
child 18372 2bffdf62fe7f
--- a/src/HOL/MicroJava/BV/Product.thy	Fri Jun 17 11:35:35 2005 +0200
+++ b/src/HOL/MicroJava/BV/Product.thy	Fri Jun 17 16:12:49 2005 +0200
@@ -8,7 +8,7 @@
 
 header {* \isaheader{Products as Semilattices} *}
 
-theory Product = Err:
+theory Product imports Err begin
 
 constdefs
  le :: "'a ord \<Rightarrow> 'b ord \<Rightarrow> ('a * 'b) ord"