fact: Definition CFdiv {X : ConstructiveField} (x y : X) (Hy0 : y ≠ CFzero) : X := CFmult x (CFinv y Hy0).
imports: UniMath.Algebra.DivisionRig UniMath.Algebra.Domains_and_Fields UniMath.Algebra.Apartness UniMath.MoreFoundations.Tactics