∀ {R : Type u_1} {B : Type u_2} {F : Type u_3} {E : B → Type u_4} [inst : NontriviallyNormedField R]
  [inst_1 : (x : B) → AddCommMonoid (E x)] [inst_2 : (x : B) → Module R (E x)] [inst_3 : NormedAddCommGroup F]
  [inst_4 : NormedSpace R F] [inst_5 : TopologicalSpace B] [inst_6 : (x : B) → TopologicalSpace (E x)]
  (a : VectorPrebundle R F E) {e e' : Pretrivialization F Bundle.TotalSpace.proj} (he : e ∈ a.pretrivializationAtlas)
  (he' : e' ∈ a.pretrivializationAtlas), ContinuousOn (a.coordChange he he') (e.baseSet ∩ e'.baseSet)