diff -r 0a28cf866d5d -r dc59f147b27d src/HOL/Main.thy
--- a/src/HOL/Main.thy	Thu Jul 24 11:51:22 2014 +0200
+++ b/src/HOL/Main.thy	Thu Jul 24 11:54:15 2014 +0200
@@ -26,7 +26,7 @@
   csum (infixr "+c" 65) and
   cprod (infixr "*c" 80) and
   cexp (infixr "^c" 90) and
-  convol ("<_ , _>")
+  convol ("\<langle>(_,/ _)\<rangle>")
 
 hide_const (open)
   czero cinfinite cfinite csum cone ctwo Csum cprod cexp