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Diffstat (limited to 'theories/FSets/FSetCompat.v')
| -rw-r--r-- | theories/FSets/FSetCompat.v | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/theories/FSets/FSetCompat.v b/theories/FSets/FSetCompat.v index 6b3d86d3..b1769da3 100644 --- a/theories/FSets/FSetCompat.v +++ b/theories/FSets/FSetCompat.v @@ -283,6 +283,8 @@ Module Update_WSets Lemma is_empty_spec : is_empty s = true <-> Empty s. Proof. intros; symmetry; apply MF.is_empty_iff. Qed. + + Declare Equivalent Keys In M.In. Lemma add_spec : In y (add x s) <-> E.eq y x \/ In y s. Proof. intros. rewrite MF.add_iff. intuition. Qed. |