∀ {R : Type u_1} [inst : CommRing R] {S : Type u_2} [inst_1 : CommRing S] {φ : R →+* S} {a : S}
  [inst_2 : UniformSpace R] [inst_3 : UniformSpace S] [inst_4 : IsUniformAddGroup R] [inst_5 : IsTopologicalSemiring R]
  [inst_6 : IsUniformAddGroup S] [inst_7 : T2Space S] [inst_8 : CompleteSpace S] [inst_9 : IsTopologicalRing S]
  [inst_10 : IsLinearTopology S S] (hφ : Continuous ⇑φ) (ha : PowerSeries.HasEval a),
  ⇑(PowerSeries.eval₂Hom hφ ha) = PowerSeries.eval₂ φ a