∀ {τ : Type u_2} (σ : Type u_5) (R : Type u_6) [inst : CommSemiring R] [inst_1 : Fintype σ] [inst_2 : Fintype τ] (n : ℕ)
  (e : σ ≃ τ), (MvPolynomial.rename ⇑e) (MvPolynomial.esymm σ R n) = MvPolynomial.esymm τ R n