proposition: Lemma isaset_unitary {C : category} (dag : dagger_structure C) (x y : C) : isaset (unitary dag x y).
proof: Proof. apply isaset_total2. - apply homset_property. - intro ; apply isasetaprop ; apply isaprop_is_unitary. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.DaggerCategories.Categories