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src/HOL/Library/Multiset.thy
changeset 73471 d6209de30edc
parent 73466 ee1c4962671c
parent 73470 76095cffcc2b
child 73594 5c4a09c4bc9c 
--- a/src/HOL/Library/Multiset.thy	Mon Mar 22 10:49:51 2021 +0000
+++ b/src/HOL/Library/Multiset.thy	Mon Mar 22 12:18:43 2021 +0000
@@ -2333,7 +2333,7 @@
 
 end
 
-context ordered_cancel_comm_monoid_diff
+context cancel_comm_monoid_add
 begin
 
 lemma sum_mset_diff:
isabelle