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src/HOL/Library/AList.thy
changeset 55466 786edc984c98
parent 55414 eab03e9cee8a
child 56327 3e62e68fb342 
--- a/src/HOL/Library/AList.thy	Fri Feb 14 07:53:45 2014 +0100
+++ b/src/HOL/Library/AList.thy	Fri Feb 14 07:53:46 2014 +0100
@@ -399,7 +399,7 @@
   by (simp add: map_ran_def image_image split_def)
   
 lemma map_ran_conv:
-  "map_of (map_ran f al) k = Option.map (f k) (map_of al k)"
+  "map_of (map_ran f al) k = map_option (f k) (map_of al k)"
   by (induct al) auto
 
 lemma distinct_map_ran:
isabelle