∀ {ι : Type u_2} {R : ι → Type u_3} [inst : (i : ι) → TopologicalSpace (R i)]
  [inst_1 : (i : ι) → NonUnitalNonAssocRing (R i)] [∀ (i : ι), IsSemitopologicalRing (R i)],
  IsSemitopologicalRing ((i : ι) → R i)