proposition: Theorem SSSSev__even : forall n, ev (S (S (S (S n)))) -> ev n.
proof: Proof. Admitted. Theorem ev5_nonsense : ev 5 -> 2 + 2 = 9. Proof. Admitted. Theorem inversion_ex1 : forall (n m o : nat), [n; m] = [o; o] -> [n] = [m]. Proof. intros n m o H. inversion H. reflexivity. Qed.
imports: Coq(Lia)