∀ (n : Type u_1) (R : Type u_2) (A : Type u_3) [inst : CommSemiring R] [inst_1 : Semiring A] [inst_2 : Algebra R A]
  [inst_3 : DecidableEq n] [inst_4 : Fintype n] (a₁ a₂ : A) (b₁ b₂ : Matrix n n R),
  (MatrixEquivTensor.toFunLinear n R A) ((a₁ * a₂) ⊗ₜ[R] (b₁ * b₂)) =
    (MatrixEquivTensor.toFunLinear n R A) (a₁ ⊗ₜ[R] b₁) * (MatrixEquivTensor.toFunLinear n R A) (a₂ ⊗ₜ[R] b₂)