Definition dnitocompl ( n : nat ) ( i : ⟦S n⟧ ) : ⟦n⟧ -> stn_compl i. Proof. intros j. exists ( dni i j ). apply dni_neq_i. Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.DecidablePropositions. Require Import UniMath.MoreFoundations.NegativePropositions.