Definition weqisolatedstntostn ( n : nat ) : ( isolated (⟦n⟧) ) ≃ ⟦n⟧. Proof. apply weqpr1. intro x. apply iscontraprop1. apply isapropisisolated. set ( int := isdeceqstn n x ). assumption. Defined.
Require Import UniMath.MoreFoundations.Tactics. Require Import UniMath.MoreFoundations.DecidablePropositions. Require Import UniMath.MoreFoundations.NegativePropositions.