Definition Limit_law1 :=
    forall (c : C) (tau : Cone c F), Limit_eq tau (l_diese tau).

(* Specifications: *)
Lemma Ldiese_map : forall (c : C) (tau1 tau2 : Cone c F), tau1 =_NT tau2 -> Lim_diese l tau1 =_S Lim_diese l tau2.