fact: Definition isarchCF {X : ConstructiveField} (R : hrel X) := ∏ x : X, ∃ n : nat, R (nattoring n) x.
imports: UniMath.Foundations.NaturalNumbers UniMath.Algebra.RigsAndRings UniMath.Algebra.Groups UniMath.Algebra.DivisionRig UniMath.Algebra.Domains_and_Fields UniMath.Algebra.ConstructiveStructures UniMath.MoreFoundations.Tactics