diff -r 4c51ab632cda -r 2b8c2a7547ab src/ZF/EquivClass.thy
--- a/src/ZF/EquivClass.thy	Mon Feb 05 21:33:14 1996 +0100
+++ b/src/ZF/EquivClass.thy	Tue Feb 06 12:27:17 1996 +0100
@@ -1,6 +1,6 @@
-(*  Title: 	ZF/EquivClass.thy
+(*  Title:      ZF/EquivClass.thy
     ID:         $Id$
-    Author: 	Lawrence C Paulson, Cambridge University Computer Laboratory
+    Author:     Lawrence C Paulson, Cambridge University Computer Laboratory
     Copyright   1994  University of Cambridge
 
 Equivalence relations in Zermelo-Fraenkel Set Theory 
@@ -9,7 +9,7 @@
 EquivClass = Rel + Perm + 
 consts
     "'/"        ::      [i,i]=>i  (infixl 90)  (*set of equiv classes*)
-    congruent	::	[i,i=>i]=>o
+    congruent   ::      [i,i=>i]=>o
     congruent2  ::      [i,[i,i]=>i]=>o
 
 defs