(R : Type u) →
  {S : Type v} →
    {A : Type w} →
      {B : Type u₁} →
        [inst : CommSemiring R] →
          [inst_1 : CommSemiring S] →
            [inst_2 : Semiring A] →
              [inst_3 : Semiring B] →
                [inst_4 : Algebra R S] →
                  [inst_5 : Algebra S A] →
                    [inst_6 : Algebra R A] →
                      [inst_7 : Algebra S B] →
                        [inst_8 : Algebra R B] →
                          [inst_9 : IsScalarTower R S A] →
                            [IsScalarTower R S B] →
                              (U : Subalgebra S A) → (↥U →ₐ[S] B) → ↥(Subalgebra.restrictScalars R U) →ₐ[R] B