proposition: Lemma idtodaggeriso_idpath_is_id {C : category} (dagC : dagger C) (x : C) : pr1 (idtodaggeriso dagC x x (idpath x)) = identity x.
proof: Proof. apply idpath. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.DaggerCategories.Categories UniMath.CategoryTheory.DaggerCategories.Unitary