Definition rig_univalence (X Y : rig) : (X = Y) ≃ (rigiso X Y) := make_weq (rig_univlalence_map X Y) (rig_univalence_isweq X Y).
Require Import UniMath.Algebra.Groups. Require Import UniMath.MoreFoundations.Sets. Require Import UniMath.MoreFoundations.Orders.