proposition: Lemma multistep_preserves_SN {Γ τ} {e e' : Γ ⊢ τ} : (e --->* e') → SN e → SN e'.
proof: Proof. intros. induction X; auto. apply IHX. now eapply step_preserves_SN; eauto. Qed.
imports: Category.Lib Category.Instance.Lambda.Ltac Category.Instance.Lambda.Ty Category.Instance.Lambda.Exp Category.Instance.Lambda.Value Category.Instance.Lambda.Ren Category.Instance.Lambda.Sub Category.Instance.Lambda.Log Category.Instance.Lambda.Sem Category.Instance.Lambda.Multi Category.Instance.Lambda.Sound Category.Instance.Lambda.Step Equations(Equations)