Definition unitary_comp {C : category} {dag : dagger C} {x y z : C} (f : unitary dag x y) (g : unitary dag y z) : unitary dag x z := _ ,, is_unitary_comp (pr2 f) (pr2 g).
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Core.Isos. Require Import UniMath.CategoryTheory.DaggerCategories.Categories.