Documentation

LeanPool.AnomalousDiffusion.AVenhance.Infra.Section3.KappaAtPrimeBootstrap

Bootstrap estimates comparing the diffusivity recursion with κ′.

The top endpoint is treated directly from the permitted interval. Interior steps use the corrected κ′ exprat estimate and the unconditional averaging bound.

The top permitted value also has a small exprat ratio, with the 2δ exponent.

Equations
Instances For
    theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.endpoint_exponent_gap {β : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) :
    2 * delta β ≤ q β * (2 - β + gamma β) - (2 - β + 4 * delta β)
    theorem AVenhance.Infra.Section3.kappaPrimeAt_terminal_exprat_upper {β : ℝ} {Λ M : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) {κ : ℝ} (hκ : 0 < κ) (hpermitted : κ ∈ permittedInterval β Λ M) (hM : 2 ≤ M) :
    epsilon β Λ M ^ 2 / (κ * tau β Λ M) ≤ kappaPrimeEndpointExpratConstant β * epsilon β Λ (M - 1) ^ (2 * delta β)

    The terminal ratio ε_M²/(κ τ_M) is controlled directly by the permitted interval and the M−1 time scale, with the one-sided exponent 2δ.

    The uniform upper constant for the interior κ′ exprat estimate.

    Equations
    • One or more equations did not get rendered due to their size.
    Instances For

      One constant covers the interior κ′ exprat estimate and the direct permitted-interval estimate at its terminal scale.

      Equations
      Instances For
        theorem AVenhance.Infra.Section3.kappaPrimeAt_exprat_global_upper {β : ℝ} {Λ M : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) {κ : ℝ} (hκ : 0 < κ) (hpermitted : κ ∈ permittedInterval β Λ M) {m : ℕ} (hm : 2 ≤ m) (hmM : m ≤ M) :
        epsilon β Λ m ^ 2 / (kappaPrimeAt β Λ κ m (M - m) * tau β Λ m) ≤ kappaPrimeExpratGlobalUpperConstant β * epsilon β Λ (m - 1) ^ delta β

        The κ′ exprat ratio, including the terminal scale, is bounded by one β-only constant times ε_{m−1}^δ.

        theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.coarse_recurrence_ratio_step {u v B D w R : ℝ} (hu : 0 < u) (hv : 0 < v) (hB : 0 < B) (hD : D = 40 / 9 * B) (hcurrent : max (u / v) (v / u) ≤ R) (hlo : u ≤ w) (hhi : w ≤ u + D / u) :
        max (w / (v + B / v)) ((v + B / v) / w) ≤ R * (1 + 40 / 9 * (B / v ^ 2))

        The elementary coarse comparison for one enhancement step. It is used only when the finite-scale ratio is too large for the averaging estimate.

        theorem AVenhance.Infra.Section3.epsilon_delta_le_geometric {β : ℝ} {Λ : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) (n : ℕ) :
        epsilon β Λ n ^ delta β ≤ (128 ^ (-delta β)) ^ n

        The scale error is dominated by a fixed geometric sequence.

        noncomputable def AVenhance.Infra.Section3.kappaAtBootstrapTail (β E : ℝ) (n : ℕ) :

        The geometric tail used to keep all high-scale recurrence comparisons inside the factor-two bootstrap.

        Equations
        Instances For
          theorem AVenhance.Infra.Section3.kappaAtBootstrapTail_succ {β E : ℝ} (n : ℕ) (hden : 1 - 128 ^ (-delta β) ≠ 0) :
          kappaAtBootstrapTail β E n = E * (128 ^ (-delta β)) ^ n + kappaAtBootstrapTail β E (n + 1)

          One recurrence step splits off the first term of the geometric tail.

          theorem AVenhance.Infra.Section3.exists_kappaAtBootstrap_cutoff {β E : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hE : 0 < E) :
          ∃ (N : ℕ), 1 ≤ N ∧ kappaAtBootstrapTail β E N ≤ 1 / 2

          A finite cutoff can make the high-scale geometric tail as small as needed.

          The one-step error coefficient when the current actual/prime ratio is bounded by R.

          Equations
          • One or more equations did not get rendered due to their size.
          Instances For

            A bad-step threshold determined by the current comparison bound.

            Equations
            Instances For

              A lower bound for the next epsilon scale whenever a step is too coarse for the relative averaging estimate.

              Equations
              • One or more equations did not get rendered due to their size.
              Instances For

                The prime increment ratio is uniformly bounded on a bad low-scale step.

                Equations
                • One or more equations did not get rendered due to their size.
                Instances For

                  The worst multiplicative loss of one low-scale step at ratio bound R.

                  Equations
                  Instances For

                    Finite iteration of the coarse low-scale step factors.

                    Equations
                    Instances For
                      theorem AVenhance.Infra.Section3.kappaAtBootstrapErrorCoefficient_pos {β C₀ R : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hC₀ : 0 ≤ C₀) (hR : 1 ≤ R) :
                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.kappaAtBootstrapThreshold_pos {β C₀ R : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hC₀ : 0 ≤ C₀) (hR : 1 ≤ R) :
                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.kappaAtBootstrapErrorCoefficient_ge_one {β C₀ R : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hC₀ : 0 ≤ C₀) (hR : 1 ≤ R) :
                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.epsilon_le_one_over_128_local {β : ℝ} {Λ n : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) (hn : 1 ≤ n) :
                      epsilon β Λ n ≤ 1 / 128
                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.epsilon_next_lower_of_bad_threshold {β : ℝ} {Λ j : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) (hj : 2 ≤ j) {t : ℝ} (ht : 0 < t) (hbad : t < epsilon β Λ (j - 1) ^ delta β) :
                      1 / 2 * t ^ (q β / delta β) ≤ epsilon β Λ j

                      Every exceptional low-scale step has a β- and C₀-uniform lower bound on its next epsilon scale.

                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.kappaPrime_increment_ratio_internal_upper {β : ℝ} {Λ M j : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) {κ : ℝ} (hκ : 0 < κ) (hpermitted : κ ∈ permittedInterval β Λ M) (hj : 1 ≤ j) (hjM : j < M) :
                      9 / 80 * (a β Λ j ^ 2 * epsilon β Λ j ^ 4) / kappaPrimeAt β Λ κ j (M - j) ^ 2 ≤ 80 / 9 * kappaPrimeUniformConstant β ^ 2 * epsilon β Λ j ^ (-2 * gamma β)

                      On an interior scale, the normalized κ′ lower bound controls its relative enhancement increment.

                      theorem AVenhance.Infra.Section3.KappaAtPrimeBootstrap.kappaPrime_increment_ratio_terminal_upper {β : ℝ} {Λ M : ℕ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hΛ : 2 ^ 7 ≤ Λ) {κ : ℝ} (hκ : 0 < κ) (hpermitted : κ ∈ permittedInterval β Λ M) :
                      9 / 80 * (a β Λ M ^ 2 * epsilon β Λ M ^ 4) / κ ^ 2 ≤ 9 / 20
                      theorem AVenhance.Infra.Section3.kappaAtBootstrap_one_step {β C₀ : ℝ} (I : Ingredients β) (hCz : I.Czeta ≤ C₀) (hCh : I.Chat ≤ C₀) {κ : ℝ} (hκ : 0 < κ) {M j : ℕ} (hpermitted : κ ∈ permittedInterval β I.Λ M) (hj : 2 ≤ j) (hjM : j ≤ M) {R : ℝ} (hR : 1 ≤ R) (hcurrent : max (I.kappaAt κ j (M - j) / kappaPrimeAt β I.Λ κ j (M - j)) (kappaPrimeAt β I.Λ κ j (M - j) / I.kappaAt κ j (M - j)) ≤ R) :
                      max (I.KhomScalar (I.kappaAt κ j (M - j)) j / (kappaPrimeAt β I.Λ κ j (M - j) + 9 / 80 * (a β I.Λ j ^ 2 * epsilon β I.Λ j ^ 4) / kappaPrimeAt β I.Λ κ j (M - j))) ((kappaPrimeAt β I.Λ κ j (M - j) + 9 / 80 * (a β I.Λ j ^ 2 * epsilon β I.Λ j ^ 4) / kappaPrimeAt β I.Λ κ j (M - j)) / I.KhomScalar (I.kappaAt κ j (M - j)) j) ≤ R * kappaAtBootstrapStepFactor β C₀ R

                      A comparison step is controlled either by the averaging estimate with a small relative error or by the crude two-sided flux bound.

                      theorem AVenhance.Infra.Section3.kappaAtBootstrap_averaged_step {β C₀ : ℝ} (I : Ingredients β) (hCz : I.Czeta ≤ C₀) (hCh : I.Chat ≤ C₀) {κ : ℝ} (hκ : 0 < κ) {M j : ℕ} (hpermitted : κ ∈ permittedInterval β I.Λ M) (hj : 2 ≤ j) (hjM : j ≤ M) {R : ℝ} (hR : 1 ≤ R) (hcurrent : max (I.kappaAt κ j (M - j) / kappaPrimeAt β I.Λ κ j (M - j)) (kappaPrimeAt β I.Λ κ j (M - j) / I.kappaAt κ j (M - j)) ≤ R) (hηsmall : kappaAtBootstrapErrorCoefficient β C₀ R * epsilon β I.Λ (j - 1) ^ delta β < 1) :
                      have η := kappaAtBootstrapErrorCoefficient β C₀ R * epsilon β I.Λ (j - 1) ^ delta β; max (I.KhomScalar (I.kappaAt κ j (M - j)) j / (kappaPrimeAt β I.Λ κ j (M - j) + 9 / 80 * (a β I.Λ j ^ 2 * epsilon β I.Λ j ^ 4) / kappaPrimeAt β I.Λ κ j (M - j))) ((kappaPrimeAt β I.Λ κ j (M - j) + 9 / 80 * (a β I.Λ j ^ 2 * epsilon β I.Λ j ^ 4) / kappaPrimeAt β I.Λ κ j (M - j)) / I.KhomScalar (I.kappaAt κ j (M - j)) j) ≤ R / (1 - η)

                      Good-step comparison with the actual, summable relative error retained.

                      theorem AVenhance.Infra.Section3.kappaAtBootstrap_errorCoefficient_mono {β C₀ R S : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) (hC₀ : 0 ≤ C₀) (hRS : R ≤ S) :
                      theorem AVenhance.Infra.Section3.kappaAtBootstrapTail_nonneg {β : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) {E : ℝ} (hE : 0 ≤ E) (n : ℕ) :
                      theorem AVenhance.Infra.Section3.kappaAtBootstrapTail_le_half_of_index {β : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) {E : ℝ} (hE : 0 < E) {N n : ℕ} (hN : kappaAtBootstrapTail β E N ≤ 1 / 2) (hn : N ≤ n) :
                      theorem AVenhance.Infra.Section3.kappaAtBootstrapTail_step_bound {β η : ℝ} (hβ : 1 < β) (hβ' : β < 4 / 3) {E : ℝ} (hE : 0 < E) {m : ℕ} (hmTail : kappaAtBootstrapTail β E m ≤ 1 / 2) (hη0 : 0 ≤ η) (hη : η ≤ E * (128 ^ (-delta β)) ^ m) :
                      (1 - kappaAtBootstrapTail β E (m + 1))⁻¹ / (1 - η) ≤ (1 - kappaAtBootstrapTail β E m)⁻¹