diff options
| -rw-r--r-- | theories/ZArith/zarith_aux.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/theories/ZArith/zarith_aux.v b/theories/ZArith/zarith_aux.v index 936468fef7..81c87f7c1d 100644 --- a/theories/ZArith/zarith_aux.v +++ b/theories/ZArith/zarith_aux.v @@ -77,9 +77,9 @@ Proof. Destruct x;Intros;Rewrite Zmult_sym;Auto with arith. Qed. -Lemma Zabs_Zsgn: (x:Z)(Zabs x)=(Zmult (Zsgn x) x). +Lemma Zabs_Zsgn: (x:Z)(Zmult (Zabs x) (Zsgn x))=x. Proof. -Destruct x;Intros;Auto with arith. +Destruct x;Intros; Rewrite Zmult_sym; Auto with arith. Qed. (** From [nat] to [Z] *) |