(A B : Ring) := { rng_iso_homo : RingHomomorphism A B ; isequiv_rng_iso_homo : IsEquiv rng_iso_homo ; }.
Require Import WildCat. Require Import Spaces.Nat.Core Spaces.Nat.Arithmetic. Require Import Classes.interfaces.abstract_algebra. Require Import Algebra.Groups.Group Algebra.Groups.Subgroup. Require Import Modalities.ReflectiveSubuniverse.