Section weak_inverse_projection_postulate_weak_tarski_s_parallel_postulate.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.
(** Formalization of a proof from Bachmann's article "Zur Parallelenfrage" *)

Lemma weak_inverse_projection_postulate__weak_tarski_s_parallel_postulate :
weak_inverse_projection_postulate -> weak_tarski_s_parallel_postulate.