∀ {R : Type u} {S₂ : Type w} {σ : Type u_1} [inst : CommSemiring R] [inst_1 : CommSemiring S₂] [inst_2 : Algebra R S₂]
  (f : σ → S₂) (φ : MvPolynomial σ R),
  (∀ (d : σ →₀ ℕ), MvPolynomial.coeff d φ ≠ 0 → ∃ i ∈ d.support, f i = 0) → (MvPolynomial.aeval f) φ = 0