src/HOL/Library/Quadratic_Discriminant.thy

--- a/src/HOL/Library/Quadratic_Discriminant.thy	Tue Jan 05 13:41:29 2016 +0100
+++ b/src/HOL/Library/Quadratic_Discriminant.thy	Tue Jan 05 13:48:51 2016 +0100
@@ -1,4 +1,4 @@
-(*  Title:       Roots of real quadratics
+(*  Title:       HOL/Library/Quadratic_Discriminant.thy
     Author:      Tim Makarios <tjm1983 at gmail.com>, 2012
 
 Originally from the AFP entry Tarskis_Geometry