Corollary iscontrstn1 : iscontr (⟦1⟧). Proof. apply iscontrifweqtounit. apply weqstn1tounit. Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.DecidablePropositions. Require Import UniMath.MoreFoundations.NegativePropositions.