Corollary isasetstn ( n : nat ) : isaset (⟦n⟧). Proof. intro. apply ( isasetifdeceq _ ( isdeceqstn n ) ). Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.DecidablePropositions. Require Import UniMath.MoreFoundations.NegativePropositions.