diff options
Diffstat (limited to 'theories/ZArith')
| -rw-r--r-- | theories/ZArith/Zorder.v | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/theories/ZArith/Zorder.v b/theories/ZArith/Zorder.v index 32faf5a95..a8cd69bb3 100644 --- a/theories/ZArith/Zorder.v +++ b/theories/ZArith/Zorder.v @@ -111,6 +111,12 @@ Proof. Z.swap_greater. apply Z.nle_gt. Qed. +Lemma not_Zne n m : ~ Zne n m -> n = m. +Proof. + intros H. + destruct (Z.eq_decidable n m); [assumption|now elim H]. +Qed. + (** * Equivalence and order properties *) (** Reflexivity *) |