proposition: Lemma isincldni ( n : nat ) ( i : ⟦S n⟧ ) : isincl ( dni i ).
proof: Proof. intros. exact ( isdecincltoisincl _ ( isdecincldni n i ) ). Defined.
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions