diff -r 9ffd27558916 -r 0842e906300c src/HOL/Library/Ramsey.thy
--- a/src/HOL/Library/Ramsey.thy	Fri Mar 27 10:05:08 2009 +0100
+++ b/src/HOL/Library/Ramsey.thy	Fri Mar 27 10:05:11 2009 +0100
@@ -1,12 +1,11 @@
 (*  Title:      HOL/Library/Ramsey.thy
-    ID:         $Id$
     Author:     Tom Ridge. Converted to structured Isar by L C Paulson
 *)
 
 header "Ramsey's Theorem"
 
 theory Ramsey
-imports Plain "~~/src/HOL/Presburger" Infinite_Set
+imports Main Infinite_Set
 begin
 
 subsection {* Preliminaries *}