fact: Definition finstructoncoprod {X Y : UU} (sx : finstruct X) (sy : finstruct Y) : finstruct (X ⨿ Y) := make_finstruct (X ⨿ Y) (nelstructoncoprod sx sy).
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes