fact: Axiom binds_app_uniq_1 : uniq (E ++ F) -> binds x a (E ++ F) -> (binds x a E /\ ~ In x (dom F)) \/ (binds x a F /\ ~ In x (dom E)).
imports: Coq.FSets.FSets Coq.Lists.List Coq.Logic.Decidable Metalib.CoqFSetDecide Metalib.CoqListFacts Metalib.AssocList Metalib.MetatheoryAtom Metalib.LibTactics