src/HOL/Isar_Examples/Group_Notepad.thy
changeset 58882 6e2010ab8bd9
parent 58614 7338eb25226c
child 61797 458b4e3720ab
--- a/src/HOL/Isar_Examples/Group_Notepad.thy	Sun Nov 02 17:20:45 2014 +0100
+++ b/src/HOL/Isar_Examples/Group_Notepad.thy	Sun Nov 02 17:23:48 2014 +0100
@@ -2,7 +2,7 @@
     Author:     Makarius
 *)
 
-header \<open>Some algebraic identities derived from group axioms -- proof notepad version\<close>
+section \<open>Some algebraic identities derived from group axioms -- proof notepad version\<close>
 
 theory Group_Notepad
 imports Main