--- a/src/HOL/Library/Library.thy Thu Jan 16 15:47:33 2014 +0100 +++ b/src/HOL/Library/Library.thy Thu Jan 16 16:20:17 2014 +0100 @@ -63,7 +63,6 @@ Sublist Sum_of_Squares Transitive_Closure_Table - Wfrec While_Combinator Zorn begin