∀ {𝕜 : Type u_1} {A : Type u_2} {F : Type u_3} [inst : NormedField 𝕜] [inst_1 : NormedRing A]
  [inst_2 : NormedAlgebra 𝕜 A] [CompleteSpace A] [NormOneClass A] [inst_5 : FunLike F A 𝕜] [AlgHomClass F 𝕜 A 𝕜] (f : F)
  (a : A), ‖f a‖ ≤ ‖a‖