proposition: Lemma isaprop_isfilter_finite_intersection : isaprop isfilter_finite_intersection.
proof: Proof. apply impred_isaprop ; intros L. apply isapropimpl. apply propproperty. Qed.
imports: UniMath.Foundations.Preamble UniMath.MoreFoundations.Tactics UniMath.Topology.Prelim UniMath.MoreFoundations.PartA