diff -r 2946b8f057df -r 579258a77fec src/HOL/Library/Library.thy
--- a/src/HOL/Library/Library.thy	Thu Jul 01 09:01:09 2010 +0200
+++ b/src/HOL/Library/Library.thy	Thu Jul 01 11:48:42 2010 +0200
@@ -27,6 +27,7 @@
   Fset
   FuncSet
   Fundamental_Theorem_Algebra
+  Indicator_Function
   Infinite_Set
   Inner_Product
   Lattice_Algebras