fact: Definition CDRdiv {X : ConstructiveDivisionRig} (x y : X) (Hy0 : y ≠ 0) : X := CDRmult x (CDRinv y Hy0).
imports: UniMath.Algebra.DivisionRig UniMath.Algebra.Domains_and_Fields UniMath.Algebra.Apartness UniMath.MoreFoundations.Tactics