src/HOL/Algebra/Divisibility.thy

--- a/src/HOL/Algebra/Divisibility.thy	Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Algebra/Divisibility.thy	Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
     Author:     Stephan Hohe
 *)
 
-header {* Divisibility in monoids and rings *}
+section {* Divisibility in monoids and rings *}
 
 theory Divisibility
 imports "~~/src/HOL/Library/Permutation" Coset Group