Definition mor_of_internal_sopfib_over_preserves {B : bicat} {e₁ b₁ : B} {p₁ : e₁ --> b₁} {e₂ b₂ : B} {p₂ : e₂ --> b₂} {fb : b₁ --> b₂} (fe : mor_of_internal_sopfib_over p₁ p₂ fb) : mor_preserves_opcartesian p₁ p₂ fe := pr12 fe.
Require Import UniMath.Foundations.All. Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.Bicategories.Core.Bicat. Import Bicat.Notations. Require Import UniMath.Bicategories.Core.Invertible_2cells. Require Import UniMath.Bicategories.Core.Examples.OpCellBicat. Require Import UniMath.Bicategories.Core.Univalence. Require Import UniMath.Bicategories.Core.UnivalenceOp. Require Import UniMath.Bicategories.Morphisms.InternalStreetFibration.