diff -r 2da6f4945295 -r bd2ccef8209b src/HOL/Multivariate_Analysis/Brouwer_Fixpoint.thy
--- a/src/HOL/Multivariate_Analysis/Brouwer_Fixpoint.thy	Tue Jan 05 14:25:12 2016 +0100
+++ b/src/HOL/Multivariate_Analysis/Brouwer_Fixpoint.thy	Tue Jan 05 15:35:08 2016 +0100
@@ -52,7 +52,7 @@
 lemma swap_apply2: "Fun.swap x y f y = f x"
   by (simp add: Fun.swap_def)
 
-lemma (in -) lessThan_empty_iff: "{..< n::nat} = {} \<longleftrightarrow> n = 0"
+lemma lessThan_empty_iff: "{..< n::nat} = {} \<longleftrightarrow> n = 0"
   by auto
 
 lemma Zero_notin_Suc: "0 \<notin> Suc ` A"