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-rw-r--r--theories/ZArith/fast_integer.v5
1 files changed, 3 insertions, 2 deletions
diff --git a/theories/ZArith/fast_integer.v b/theories/ZArith/fast_integer.v
index 59ee28cd5b..8563768bfa 100644
--- a/theories/ZArith/fast_integer.v
+++ b/theories/ZArith/fast_integer.v
@@ -188,6 +188,7 @@ V8Infix "/" Zdiv2_pos : positive_scope.
(**********************************************************************)
(** Comparison on binary positive numbers *)
+V7only [Notation relation := Datatypes.relation.].
Fixpoint compare [x,y:positive]: relation -> relation :=
[r:relation]
@@ -2358,9 +2359,9 @@ Qed.
(** Associativity mixed with commutativity *)
-Theorem Zmult_permute : (x,y,z:Z)(Zmult x (Zmult y z)) = (Zmult y (Zmult x z)).
+Theorem Zmult_permute : (n,m,p:Z)(Zmult n (Zmult m p)) = (Zmult m (Zmult n p)).
Proof.
-Intros; Rewrite -> (Zmult_assoc y x z); Rewrite -> (Zmult_sym y x).
+Intros; Rewrite -> (Zmult_assoc m n p); Rewrite -> (Zmult_sym m n).
Apply Zmult_assoc.
Qed.