fact: Definition isofnelonweq {X : UU} {n : nat} (sx : isofnel n X) : isofnel (factorial n) (X ≃ X) := hinhfun nelstructonweq sx.
imports: UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.StandardFiniteSets UniMath.MoreFoundations.Subtypes