∀ {B : Type u_1} {F : Type u_2} {Z : Type u_4} [inst : TopologicalSpace B] [inst_1 : TopologicalSpace F] {proj : Z → B}
  [inst_2 : TopologicalSpace Z] (e : Bundle.Trivialization F proj) (s : Set B), e.IsImage (proj ⁻¹' s) (s ×ˢ Set.univ)