proposition: Lemma stnneq_iff_nopath {n : nat} (i j: ⟦n⟧ ) : ¬ (i = j) <-> i ≠ j.
proof: Proof. intros. apply negProp_to_iff. Defined.
imports: UniMath.Foundations.NaturalNumbers UniMath.MoreFoundations.Tactics UniMath.MoreFoundations.DecidablePropositions UniMath.MoreFoundations.NegativePropositions