Global Instance Tarski_3D_follows_from_Hilbert_3D : (Tarski_3D H_to_T_PED).

(* Specifications: *)
Lemma Col__ColH : forall A B C, Col A B C -> ColH A B C.
Lemma ColH__Col : forall A B C, ColH A B C -> Col A B C.
Lemma playfair_s_postulateH : playfair_s_postulate.
Lemma decidability_of_intersectionH : parallel_postulates.decidability_of_intersection.
Lemma tarski_s_euclid : tarski_s_parallel_postulate.