Lemma weqoverdnicoprod_eq2 {n : nat} (P: ⟦S n⟧→UU) p : invmap (weqoverdnicoprod P) (ii2 p) = (lastelement ,, p ). Proof. intros. apply idpath. Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.DecidablePropositions. Require Import UniMath.MoreFoundations.NegativePropositions.