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src/HOL/ex/Cubic_Quartic.thy
changeset 62225 c8c48906b858
parent 59190 3a594fd13ca4
child 62361 746d1698f31c 
--- a/src/HOL/ex/Cubic_Quartic.thy	Wed Jan 20 19:19:55 2016 +0100
+++ b/src/HOL/ex/Cubic_Quartic.thy	Wed Jan 20 23:05:57 2016 +0100
@@ -2,7 +2,7 @@
     Author:     Amine Chaieb
 *)
 
-header "The Cubic and Quartic Root Formulas"
+section "The Cubic and Quartic Root Formulas"
 
 theory Cubic_Quartic
 imports Complex_Main
isabelle