∀ {B : Type u_2} {F : Type u_3} {Z : Type u_4} [inst : TopologicalSpace B] [inst_1 : TopologicalSpace F] {proj : Z → B}
  [inst_2 : TopologicalSpace Z] (e : Trivialization F proj) {B' : Type u_1} [inst_3 : TopologicalSpace B']
  (h : B ≃ₜ B'), IsOpen (⇑h.symm ⁻¹' e.baseSet)