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Commit 793110fe authored by Robbert Krebbers's avatar Robbert Krebbers
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`Equivalence` for `≡` on gmultisets.

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    theories/gmultiset.v
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    ......@@ -66,6 +66,8 @@ Proof.
    Qed.
    Global Instance gmultiset_leibniz : LeibnizEquiv (gmultiset A).
    Proof. intros X Y. by rewrite gmultiset_eq. Qed.
    Global Instance gmultiset_equivalence : Equivalence (≡@{gmultiset A}).
    Proof. constructor; repeat intro; naive_solver. Qed.
    (* Multiplicity *)
    Lemma multiplicity_empty x : multiplicity x ∅ = 0.
    ......
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