--- a/src/HOL/Unix/Unix.thy Mon Aug 12 14:53:16 2013 +0200
+++ b/src/HOL/Unix/Unix.thy Mon Aug 12 15:09:13 2013 +0200
@@ -843,8 +843,6 @@
neither owned nor writable by @{term user\<^isub>1}.
*}
-
-
definition
"invariant root path =
(\<exists>att dir.