proposition: Proposition idtoiso_fiber_category {C : category} {D : disp_cat C} {x : C} {xx yy : D x} (p : xx = yy) : pr1 (@idtoiso (D [{ x }]) xx yy p) = pr1 (@idtoiso_disp C D x x (idpath x) xx yy p).
proof: Proof. induction p ; cbn. apply idpath. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Functors UniMath.CategoryTheory.DisplayedCats.NaturalTransformations UniMath.CategoryTheory.DisplayedCats.Isos UniMath.CategoryTheory.DisplayedCats.Univalence UniMath.CategoryTheory.DisplayedCats.Total