(R : Ring) (I : Subgroup R) (H : IsRightIdeal I) : RightIdeal R := Build_LeftIdeal (rng_op R) I H.
Require Import Basics Types. Require Import Spaces.Finite.Fin. Require Import Classes.interfaces.canonical_names. Require Import Algebra.Rings.Ring. Require Import Algebra.Groups.Subgroup. Require Import Algebra.AbGroups. Require Import WildCat.Core. Module Import Notation.