fact: Definition composition_preserves_cartesian {B₁ B₂ B₃ E₁ E₂ E₃ : category} {P₁ : E₁ ⟶ B₁} {P₂ : E₂ ⟶ B₂} {P₃ : E₃ ⟶ B₃} {FE₁ : E₁ ⟶ E₂} {FE₂ : E₂ ⟶ E₃} (HFE₁ : preserves_cartesian P₁ P₂ FE₁) (HFE₂ : preserves_cartesian P₂ P₃ FE₂) : preserves_cartesian P₁ P₃ (FE₁ ∙ FE₂).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Total UniMath.CategoryTheory.DisplayedCats.Fibrations