fact: Definition isfinitecompl {X : UU} (x : X) (sx : isfinite X) : isfinite (compl X x) := hinhfun (finstructoncompl x) sx.
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes