fact: Definition is_unitary {C : category} (dag : dagger_structure C) {x y : C} (f : C⟦x,y⟧) : UU := is_inverse_in_precat f (dag x y f).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.DaggerCategories.Categories