SubClass Fpullback1 := Limit G.Definition Fibred1_prod := Lim l.

(* Specifications: *)
Lemma Prf_pb1_law1 : Pullback_law1 (FMor G F12) (FMor G F32) Fibred1_p Fibred1_q.
Lemma Pulb_cone_law : Cone_law Pulb_tau.