diff options
Diffstat (limited to 'theories/ZArith/Zmisc.v')
| -rw-r--r-- | theories/ZArith/Zmisc.v | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/theories/ZArith/Zmisc.v b/theories/ZArith/Zmisc.v index a6da9d7e7..bfd57d758 100644 --- a/theories/ZArith/Zmisc.v +++ b/theories/ZArith/Zmisc.v @@ -21,8 +21,9 @@ Open Local Scope Z_scope. Notation iter := @Z.iter (compat "8.3"). Lemma iter_nat_of_Z : forall n A f x, 0 <= n -> - iter n A f x = iter_nat (Z.abs_nat n) A f x. + Z.iter n f x = iter_nat (Z.abs_nat n) A f x. +Proof. intros n A f x; case n; auto. -intros p _; unfold Z.iter, Z.abs_nat; apply iter_nat_of_P. +intros p _; unfold Z.iter, Z.abs_nat; apply Pos2Nat.inj_iter. intros p abs; case abs; trivial. Qed. |