fact: Definition left_beck_chevalley {w x y z : C} (f : x --> w) (g : y --> w) (h : z --> y) (k : z --> x) (p : k · f = h · g) (L₁ : dependent_sum f) (L₂ : dependent_sum h) : UU := ∏ (a : D[{x}]), is_z_isomorphism (left_beck_chevalley_nat_trans L₁ L₂ (comm_nat_z_iso f g h k p) a).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Prelude UniMath.CategoryTheory.Adjunctions.Core UniMath.CategoryTheory.DisplayedCats.Core UniMath.CategoryTheory.DisplayedCats.Univalence UniMath.CategoryTheory.DisplayedCats.Functors UniMath.CategoryTheory.DisplayedCats.Fibrations UniMath.CategoryTheory.DisplayedCats.Fiber UniMath.CategoryTheory.whiskering UniMath.CategoryTheory.Limits.Pullbacks