proposition: Lemma ss_ok_empty_for_col : forall interp, ss_ok_for_col SS.empty interp.
proof: Proof. exact ss_ok_empty. Qed.
imports: NArith GeoCoq.Utils.sets GeoCoq.Meta_theory.Models.tarski_to_coinc_theory_for_col GeoCoq.Tactics.Coinc.CoincR