src/HOL/Auth/NS_Shared.thy
changeset 56681 e8d5d60d655e
parent 55417 01fbfb60c33e
child 58860 fee7cfa69c50
--- a/src/HOL/Auth/NS_Shared.thy	Thu Apr 24 10:33:17 2014 +0200
+++ b/src/HOL/Auth/NS_Shared.thy	Thu Apr 24 17:52:19 2014 +0200
@@ -86,7 +86,6 @@
 declare parts.Body  [dest]
 declare Fake_parts_insert_in_Un  [dest]
 declare analz_into_parts [dest]
-declare image_eq_UN [simp]  (*accelerates proofs involving nested images*)
 
 
 text{*A "possibility property": there are traces that reach the end*}