fact: Definition preserves_cartesian {B₁ B₂ E₁ E₂ : category} (P₁ : E₁ ⟶ B₁) (P₂ : E₂ ⟶ B₂) (FE : E₁ ⟶ E₂) : UU := ∏ (e₁ e₂ : E₁) (f : e₁ --> e₂), is_cartesian_sfib P₁ f → is_cartesian_sfib P₂ (#FE f).
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