fact: Definition concatenate'_r0 {X:UU} {m:nat} (f : ⟦m⟧ -> X) (g : ⟦0⟧ -> X) : concatenate' f g = transportb (λ n, ⟦n⟧ -> X) (natplusr0 m) f.
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions