∀ {α : Type u_1} {β : Type u_2} [inst : MeasurableSpace α] [inst_1 : MeasurableSpace β] {M : Type u_3}
  [inst_2 : AddCommMonoid M] [inst_3 : TopologicalSpace M] [inst_4 : ContinuousAdd M]
  (v w : MeasureTheory.VectorMeasure α M) (f : α → β), (v + w).map f = v.map f + w.map f