--- a/src/HOL/Library/Library.thy Sun Sep 25 00:32:49 2011 +0200
+++ b/src/HOL/Library/Library.thy Sun Sep 25 09:37:33 2011 +0200
@@ -49,6 +49,7 @@
Quotient_List
Quotient_Option
Quotient_Product
+ Quotient_Set
Quotient_Sum
Quotient_Syntax
Quotient_Type