--- a/src/HOL/Parity.thy Sun Nov 02 18:21:14 2014 +0100
+++ b/src/HOL/Parity.thy Sun Nov 02 18:21:45 2014 +0100
@@ -3,7 +3,7 @@
Author: Jacques D. Fleuriot
*)
-header {* Parity in rings and semirings *}
+section {* Parity in rings and semirings *}
theory Parity
imports Nat_Transfer