src/ZF/AC.thy

-(*  Title: 	ZF/AC.thy
+(*  Title:      ZF/AC.thy
     ID:         $Id$
-    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
+    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     Copyright   1994  University of Cambridge
 
 The Axiom of Choice
 
 This definition comes from Halmos (1960), page 59.
 *)
 
 AC = ZF + "func" +
 rules
-  AC	"[| a: A;  !!x. x:A ==> (EX y. y:B(x)) |] ==> EX z. z : Pi(A,B)"
+  AC    "[| a: A;  !!x. x:A ==> (EX y. y:B(x)) |] ==> EX z. z : Pi(A,B)"
 end