(G H : Group) := Build_GroupIsomorphism { grp_iso_homo :> GroupHomomorphism G H; isequiv_group_iso :: IsEquiv grp_iso_homo; }.
Require Import Basics Types HProp HFiber HSet. Require Import Homotopy.IdentitySystems. Require Import (notations) Classes.interfaces.canonical_names. Require Import Pointed.Core. Require Import WildCat. Require Import Spaces.Nat.Core Spaces.Int. Require Import Truncations.Core.