{α : Type u_1} →
  {β : Type u_2} →
    [inst : TopologicalSpace α] →
      [inst_1 : TopologicalSpace β] →
        {γ : Type u_3} →
          [inst_2 : TopologicalSpace γ] →
            [inst_3 : MulOneClass γ] → [inst_4 : ContinuousMul γ] → C(α, β) → C(β, γ) →* C(α, γ)