Actual unshifted Gevrey product and lower-pressure estimates with constants independent of truncation.
theorem
EulerWeightedConvolution.unshifted_product_term
(ρ : ℝ)
(hρ : 0 < ρ)
(j l : ℕ)
(a b : ℝ)
(ha : 0 ≤ a)
(hb : 0 ≤ b)
:
EulerPacketWeights.weight ρ (j + l) * ↑((j + l).choose l) * a * b ≤ EulerPacketWeights.weight ρ l * a * (EulerPacketWeights.weight ρ j * b)
The ordinary Gevrey-two product weight is submultiplicative after paying the binomial coefficient.
theorem
EulerWeightedConvolution.unshifted_product_sum
(ρ : ℝ)
(hρ : 0 < ρ)
(N : ℕ)
(A B : ℕ → ℝ)
(hA : ∀ (n : ℕ), 0 ≤ A n)
(hB : ∀ (n : ℕ), 0 ≤ B n)
:
∑ n ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ n * EulerJetProductBounds.leibnizConvolution A B n ≤ (∑ l ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ l * A l) * ∑ j ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ j * B j
The actual binomial product convolution is bounded in unshifted Gevrey sums with constant one.
theorem
EulerH6Nonlinear.product_unshifted_weighted_bound
(period : ℝ)
[Fact (0 < period)]
(d N : ℕ)
(ρ : ℝ)
(hρ : 0 < ρ)
(f : EulerLiftedGradientSpace.LiftDomain period → ℝ)
(g : EulerLiftedGradientSpace.LiftDomain period → EulerSobolev.Domain d)
(hf :
∀ (x : EulerLiftedGradientSpace.LiftDomain period), ContDiff ℝ (↑⊤) (EulerMetricTransport.localFieldLift period f x))
(hg :
∀ (x : EulerLiftedGradientSpace.LiftDomain period), ContDiff ℝ (↑⊤) (EulerMetricTransport.localFieldLift period g x))
(hfL :
∀ (j : ℕ) (w : Fin j → Fin 4),
MeasureTheory.MemLp (EulerCylinderSobolev.iteratedFieldDerivative period w f) 2
(EulerLiftedGradientSpace.liftMeasure period))
(hgL :
∀ (j : ℕ) (w : Fin j → Fin 4),
MeasureTheory.MemLp (EulerCylinderSobolev.iteratedFieldDerivative period w g) 2
(EulerLiftedGradientSpace.liftMeasure period))
:
(∑ n ∈ Finset.range (N + 1),
EulerPacketWeights.weight ρ n * wordSobolevNorm period 6 n fun (x : EulerLiftedGradientSpace.LiftDomain period) => f x • g x) ≤ (productConstant period d * ∑ l ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ l * wordSobolevNorm period 6 l f) * ∑ j ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ j * wordSobolevNorm period 6 j g
The actual scalar-vector product is bounded in every finite unshifted H⁶ Gevrey sum.
theorem
EulerH6Nonlinear.transport_lower_weighted_bound
(period : ℝ)
[Fact (0 < period)]
(N : ℕ)
(ρ : ℝ)
(hρ : 0 < ρ)
(b : EulerLiftedGradientSpace.LiftDomain period → EulerSobolev.Domain 4)
(e : EulerLiftedGradientSpace.LiftDomain period → EulerLiftedGradientSpace.Vector3)
(hb :
∀ (x : EulerLiftedGradientSpace.LiftDomain period), ContDiff ℝ (↑⊤) (EulerMetricTransport.localFieldLift period b x))
(he :
∀ (x : EulerLiftedGradientSpace.LiftDomain period), ContDiff ℝ (↑⊤) (EulerMetricTransport.localFieldLift period e x))
(hbL :
∀ (j : ℕ) (w : Fin j → Fin 4),
MeasureTheory.MemLp (EulerCylinderSobolev.iteratedFieldDerivative period w b) 2
(EulerLiftedGradientSpace.liftMeasure period))
(heL :
∀ (j : ℕ) (w : Fin j → Fin 4),
MeasureTheory.MemLp (EulerCylinderSobolev.iteratedFieldDerivative period w e) 2
(EulerLiftedGradientSpace.liftMeasure period))
:
∑ n ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ n * wordSobolevNorm period 5 n (transportField period 3 b e) ≤ (5460 * lowerProductConstant period 3 * ∑ l ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ l * wordSobolevNorm period 6 l b) * ∑ j ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ j * wordSobolevNorm period 6 j e
The actual transport source in H⁵ is bounded by H⁶ energies at the same external cutoff.
theorem
EulerH6Pressure.multiply_block_weighted_bound
(period : ℝ)
[Fact (0 < period)]
{directions : Fin 4 → EulerLiftedGradientSpace.LiftTangent}
{s q : ℕ}
{A : EulerSpatialSobolevInverse.SmoothCoefficient period}
{f : ↥(EulerLiftedGradientSpace.LiftL2 period)}
(K : EulerSpatialSobolevInverse.CoefficientJet period directions s A)
(J : EulerSpatialSobolevInverse.SpatialJet period directions s f)
(N : ℕ)
(hN : N + q ≤ s)
(ρ : ℝ)
(hρ : 0 < ρ)
:
∑ n ∈ Finset.range (N + 1),
EulerPacketWeights.weight ρ n * blockNorm period (EulerSpatialSobolevInverse.SpatialJet.multiply K J) q n ≤ (∑ l ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ l * coefficientBlock period K q l) * ∑ j ∈ Finset.range (N + 1), EulerPacketWeights.weight ρ j * blockNorm period J q j
Actual coefficient multiplication has its unshifted weighted fixed-Sobolev bound.