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src/HOL/ex/Pythagoras.thy
changeset 62225 c8c48906b858
parent 61343 5b5656a63bd6
child 62390 842917225d56 
--- a/src/HOL/ex/Pythagoras.thy	Wed Jan 20 19:19:55 2016 +0100
+++ b/src/HOL/ex/Pythagoras.thy	Wed Jan 20 23:05:57 2016 +0100
@@ -2,7 +2,7 @@
     Author:     Amine Chaieb
 *)
 
-header "The Pythagorean Theorem"
+section "The Pythagorean Theorem"
 
 theory Pythagoras
 imports Complex_Main
isabelle