∀ (B : Type u_1) (F : Type u_2) [inst : TopologicalSpace B] [inst_1 : TopologicalSpace F],
  Bundle.Trivial.trivialization B F =
    { toOpenPartialHomeomorph := (Bundle.Trivial.homeomorphProd B F).toOpenPartialHomeomorph, baseSet := Set.univ,
      open_baseSet := ⋯, source_eq := ⋯, target_eq := ⋯, proj_toFun := ⋯ }