src/HOL/Library/Set_Algebras.thy
changeset 58881 b9556a055632
parent 57514 bdc2c6b40bf2
child 60500 903bb1495239
     1.1 --- a/src/HOL/Library/Set_Algebras.thy	Sun Nov 02 17:16:01 2014 +0100
     1.2 +++ b/src/HOL/Library/Set_Algebras.thy	Sun Nov 02 17:20:45 2014 +0100
     1.3 @@ -2,7 +2,7 @@
     1.4      Author:     Jeremy Avigad and Kevin Donnelly; Florian Haftmann, TUM
     1.5  *)
     1.6  
     1.7 -header {* Algebraic operations on sets *}
     1.8 +section {* Algebraic operations on sets *}
     1.9  
    1.10  theory Set_Algebras
    1.11  imports Main