src/HOL/Library/Quotient_Sum.thy
changeset 58881 b9556a055632
parent 55943 5c2df04e97d1
child 58916 229765cc3414
--- a/src/HOL/Library/Quotient_Sum.thy	Sun Nov 02 17:16:01 2014 +0100
+++ b/src/HOL/Library/Quotient_Sum.thy	Sun Nov 02 17:20:45 2014 +0100
@@ -2,7 +2,7 @@
     Author:     Cezary Kaliszyk and Christian Urban
 *)
 
-header {* Quotient infrastructure for the sum type *}
+section {* Quotient infrastructure for the sum type *}
 
 theory Quotient_Sum
 imports Main Quotient_Syntax