fact: Record CRingIsomorphism (A B : CRing) := { rng_iso_homo : CRingHomomorphism A B ; isequiv_rng_iso_homo : IsEquiv rng_iso_homo ; }.
imports: WildCat Spaces.Nat.Core Classes.interfaces.abstract_algebra Algebra.AbGroups Classes.theory.rings Modalities.ReflectiveSubuniverse