proposition: Proposition isaset_total_strict_twosided_disp_cat_ob {C₁ C₂ : setcategory} (D : strict_twosided_disp_cat C₁ C₂) : isaset (total_twosided_disp_category D).
proof: Proof. use isaset_total2. - apply isaset_ob. - intro x. use isaset_total2. + apply isaset_ob. + intro y. apply is_strict_strict_twosided_disp_cat. Qed.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.Core.Setcategories UniMath.CategoryTheory.TwoSidedDisplayedCats.TwoSidedDispCat UniMath.CategoryTheory.TwoSidedDisplayedCats.DisplayedFunctor UniMath.CategoryTheory.TwoSidedDisplayedCats.Isos UniMath.CategoryTheory.TwoSidedDisplayedCats.Univalence UniMath.CategoryTheory.TwoSidedDisplayedCats.Total