Analytic inputs of the centered ergodic estimates #
The four statements below are assembled from the helper modules
TermCenteredAnalytic{Window,Jets,Near,Smooth,Inputs,Compose}.
theorem
AVenhance.Infra.Section5.Contracts.sd_flow_nearIdentity
{β : ℝ}
(I : Ingredients β)
{Φ : ℕ → ℝ → Homogenization.Vec 2 → ℝ}
(hΦ : IsStreamSeq I Φ)
{m : ℕ}
(hm : 2 ≤ m)
(hsmall : epsilon β I.Λ (m - 1) ^ (2 * delta β) ≤ 1 / 4)
{t : ℝ}
(ht : t ∈ Set.Ioo 0 1)
{k : ℤ}
(hξ : I.xiMK m k t ≠ 0)
:
Ergodic.FlowDerivativeNearIdentity (LeftToShow.xFlowDiffeo I hΦ m (lIdx β I.Λ m k) t)
Near-identity of the actual flow slice on the support of ξ_{m,k}.
theorem
AVenhance.Infra.Section5.Contracts.sd_slow2_smooth_periodic
{β : ℝ}
(I : Ingredients β)
{Φ : ℕ → ℝ → Homogenization.Vec 2 → ℝ}
(hΦ : IsStreamSeq I Φ)
(m : ℕ)
(κm : ℝ)
(T : ℝ → Homogenization.Vec 2 → ℝ)
{t : ℝ}
(hTt : ContDiff ℝ (↑⊤) (T t))
(hTp : IsZ2Periodic (T t))
(k : ℤ)
(a j : Fin 2)
:
ContDiff ℝ (↑⊤) (section5SlowChoice2 I hΦ m κm T k t a j) ∧ Ergodic.IsZPeriodic (section5SlowChoice2 I hΦ m κm T k t a j)
The two slow factors are smooth and ℤ²-periodic (any k).
theorem
AVenhance.Infra.Section5.Contracts.sd_slow3_smooth_periodic
{β : ℝ}
(I : Ingredients β)
{Φ : ℕ → ℝ → Homogenization.Vec 2 → ℝ}
(hΦ : IsStreamSeq I Φ)
(m : ℕ)
(T : ℝ → Homogenization.Vec 2 → ℝ)
{t : ℝ}
(hTt : ContDiff ℝ (↑⊤) (T t))
(hTp : IsZ2Periodic (T t))
(k : ℤ)
(a j : Fin 2)
:
ContDiff ℝ (↑⊤) (section5SlowChoice3 I hΦ m T k t a j) ∧ Ergodic.IsZPeriodic (section5SlowChoice3 I hΦ m T k t a j)