diff options
-rw-r--r-- | src/Algebra.v | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/Algebra.v b/src/Algebra.v index b8cc3c921..6dc188e2c 100644 --- a/src/Algebra.v +++ b/src/Algebra.v @@ -378,8 +378,8 @@ Module Ring. Context `{is_homomorphism}. - Definition homomorphism_add : forall x y, phi (ADD x y) = add (phi x) (phi y) := - Group.homomorphism. + Lemma homomorphism_add : forall x y, phi (ADD x y) = add (phi x) (phi y). + Proof. apply Group.homomorphism. Qed. Definition homomorphism_opp : forall x, phi (OPP x) = opp (phi x) := (Group.homomorphism_inv (INV:=OPP) (inv:=opp)). |