∀ (p : ℕ) [hp : Fact (Nat.Prime p)] (k₁ k₂ : ℕ) (hk : k₁ ≤ k₂),
  (TruncatedWittVector.truncate hk).comp
      ((TruncatedWittVector.zmodEquivTrunc p k₂).toRingHom.comp (PadicInt.toZModPow k₂)) =
    (TruncatedWittVector.zmodEquivTrunc p k₁).toRingHom.comp (PadicInt.toZModPow k₁)