proposition: Lemma filtergenerated_htrue : isfilter_htrue filtergenerated.
proof: Proof. apply hinhpr. exists nil. split. + intros m. induction (nopathsfalsetotrue (pr2 m)). + easy. Qed.
imports: UniMath.Foundations.Preamble UniMath.MoreFoundations.Tactics UniMath.Topology.Prelim UniMath.MoreFoundations.PartA