fact: Definition dp_apD_nat {A} {P : A -> Type} {f g : forall x, P x} {x y : A} (q : f == g) (p : x = y) : DPathSquare P (sq_refl_h _) (apD f p) (apD g p) (q x) (q y).
imports: Basics Types.Paths Cubical.DPath Cubical.PathSquare