Definition Pulb_cone : Cone r G := Pulb_cone_law.

(* Specifications: *)
Lemma Prf_pb1_law2 : Pullback_law2 Fibred1_p Pb1_diese.
Lemma Prf_pb1_law3 : Pullback_law3 Fibred1_q Pb1_diese.
Lemma Prf_pb1_law4 : Pullback_law4 Fibred1_p Fibred1_q Pb1_diese.