fact: Definition finstructoncoprodwithunit {X : UU} (sx : finstruct X) : finstruct (X ⨿ unit) := make_finstruct (X ⨿ unit) (nelstructoncoprodwithunit sx).
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes