Global Instance independent_Tarski_neutral_dimensionless_follows_from_Hilbert :
  Gupta_inspired_variant_of_Tarski_neutral_dimensionless_with_decidable_point_equality.Global Instance H_to_T : Tarski_neutral_dimensionless.Global Instance H_to_T_PED :
  Tarski_neutral_dimensionless_with_decidable_point_equality H_to_T.

Lemma par__or_eq_para : forall A B C D l m, IncidL A l -> IncidL B l -> IncidL C m -> IncidL D m -> Par A B C D -> Para l m \/ EqL l m.