proposition: Theorem multi_R `(R : crelation X) (x y : X) : R x y → multi R x y.
proof: Proof. intros. eapply multi_step; eauto. now constructor. 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.Sem Category.Instance.Lambda.Step Equations(Equations)