{𝕜 : Type u_1} →
  {B : Type u_2} →
    {F : Type u_3} →
      [inst : TopologicalSpace B] →
        [inst_1 : NontriviallyNormedField 𝕜] →
          [inst_2 : NormedAddCommGroup F] →
            [inst_3 : NormedSpace 𝕜 F] →
              {U : Set B} →
                (φ : B → F ≃L[𝕜] F) →
                  IsOpen U →
                    ContinuousOn (fun x => ↑(φ x)) U →
                      ContinuousOn (fun x => ↑(φ x).symm) U → OpenPartialHomeomorph (B × F) (B × F)