fact: Definition F_ind@{i} (P : F -> Type@{i}) {sP : forall x, IsHProp (P x)} (dclass : forall x : Frac R, P (' x)) : forall x, P x.
imports: HoTT.HIT.quotient HoTT.Basics.Trunc HoTT.Classes.interfaces.abstract_algebra HoTT.Classes.theory.dec_fields