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