∀ {𝕜 : Type u_1} [inst : NontriviallyNormedField 𝕜] {E : Type u_3} [inst_1 : NormedAddCommGroup E]
  [inst_2 : NormedSpace 𝕜 E] {E' : Type u_6} [inst_3 : NormedAddCommGroup E'] [inst_4 : NormedSpace 𝕜 E'] {f : E → E'}
  {V : E' → E'} {s : Set E},
  VectorField.mpullbackWithin (modelWithCornersSelf 𝕜 E) (modelWithCornersSelf 𝕜 E') f V s =
    VectorField.pullbackWithin 𝕜 f V s