∀ {σ : Type u_1} {τ : Type u_2} {R : Type u_4} {S : Type u_5} (f : σ → τ) [inst : Filter.TendstoCofinite f]
  [inst_1 : CommSemiring R] [inst_2 : CommSemiring S] (φ : R →+* S) (p : MvPowerSeries σ R),
  (MvPowerSeries.rename f) ((MvPowerSeries.map φ) p) = (MvPowerSeries.map φ) ((MvPowerSeries.rename f) p)