Section Tarski_to_intuitionistic_Tarski.
Context `{TnEQD:Tarski_neutral_dimensionless_with_decidable_point_equality}.

Lemma bet_stability : forall A B C, ~ ~ BetH A B C -> BetH A B C.
Definition T A B C : Prop := ~ (A<>B /\ B<>C /\ ~ BetH A B C).