Definition unitary {C : category} (dag : dagger_structure C) (x y : C) : UU := ∑ f : C⟦x,y⟧, is_unitary dag f.
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.