fact: Definition unitary_inv {C : category} {dag : dagger C} {x y : C} (f : unitary dag x y) : unitary dag y x := _ ,, unitary_inv_is_unitary (pr2 f).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.DaggerCategories.Categories