∀ {α : Type u_1} [inst : MeasurableSpace α] {μ : MeasureTheory.Measure α} {R : Type u_5} [inst_1 : TopologicalSpace R]
  [inst_2 : Star R] [inst_3 : ContinuousStar R] (f : α →ₘ[μ] R), ↑(star f) =ᵐ[μ] star ↑f