Fixed-base pointwise and metric-loss control by actual finite Gevrey norms.
theorem
EulerGevreyLowNorms.weightedNorm_mono
(period : ℝ)
[Fact (0 < period)]
{s p q : ℕ}
(hpq : p ≤ q)
(N : ℕ)
(ρ : ℝ)
(hρ : 0 < ρ)
(u : ↥(EulerCylinderSobolevSpace.SobolevSpace period s))
:
EulerSobolevGevreyOperators.weightedNorm period p N ρ u ≤ EulerSobolevGevreyOperators.weightedNorm period q N ρ u
Monotonicity in the fixed base Sobolev index.
theorem
EulerGevreyLowNorms.restrict_norm_le_weighted
(period : ℝ)
[Fact (0 < period)]
{s q : ℕ}
(N : ℕ)
(hq : q ≤ s)
(ρ : ℝ)
(hρ : 0 < ρ)
(u : ↥(EulerCylinderSobolevSpace.SobolevSpace period s))
:
‖(EulerCylinderSobolevSpace.restrictOperator period hq) u‖ ≤ EulerSobolevGevreyOperators.weightedNorm period q N ρ u
The actual base Sobolev norm is contained in every nonempty truncated weighted sum.
theorem
EulerGevreyLowNorms.value_ae_weighted
(period : ℝ)
[Fact (0 < period)]
{s : ℕ}
(N : ℕ)
(hs : 6 ≤ s)
(ρ : ℝ)
(hρ : 0 < ρ)
(u : ↥(EulerCylinderSobolevSpace.SobolevSpace period s))
:
∀ᵐ (x : EulerLiftedGradientSpace.LiftDomain period) ∂EulerLiftedGradientSpace.liftMeasure period, ‖↑↑(EulerCylinderSobolevSpace.value period u) x‖ ≤ EulerCylinderSobolevSpace.sobolevEmbeddingConstant period 6 * EulerSobolevGevreyOperators.weightedNorm period 6 N ρ u
The actual pointwise bound has a constant depending only on the fixed base order six, never on the external cutoff.
theorem
EulerGevreyLowNorms.metricLoss_eq
(period : ℝ)
[Fact (0 < period)]
{s : ℕ}
(q N : ℕ)
(hN : N + q ≤ s)
(ρ : ℝ)
(K : ↥(EulerLiftedGradientSpace.LiftL2 period) →L[ℝ] ↥(EulerLiftedGradientSpace.LiftL2 period))
(u : ↥(EulerCylinderSobolevSpace.SobolevSpace period s))
:
EulerWeightedCylinderEnergy.weightedMetricLoss ρ (fun (I : EulerGevreyMetricComparison.ExternalWord N) => ↑I.fst) K
(EulerGevreyMetricComparison.energyValues period q N hN u) = ∑ n : Fin (N + 1),
↑↑n * EulerPacketWeights.weight ρ ↑n * ∑ w : Fin ↑n → Fin 4,
EulerBaseWordMetric.baseWordMetricNorm period K
(EulerH6Pressure.SpatialJet.derivativeJet (EulerCylinderSobolevSpace.toJet period u) w ⋯)
The exact metric radius-loss sum in fixed-base word notation.
theorem
EulerGevreyLowNorms.weightedLoss_metric_lower
(period : ℝ)
[Fact (0 < period)]
{s : ℕ}
(q N : ℕ)
(hN : N + q ≤ s)
(ρ : ℝ)
(hρ : 0 < ρ)
(K : ↥(EulerLiftedGradientSpace.LiftL2 period) →L[ℝ] ↥(EulerLiftedGradientSpace.LiftL2 period))
(u : ↥(EulerCylinderSobolevSpace.SobolevSpace period s))
(c : ℝ)
(hc : 0 < c)
(hK : ∀ (v : ↥(EulerLiftedGradientSpace.LiftL2 period)), c ^ 2 * ‖v‖ ^ 2 ≤ inner ℝ (K v) v)
:
EulerSobolevTransportCommutator.weightedLoss period q N ρ u ≤ √↑(Fintype.card (EulerBaseWordMetric.BaseWord q)) / c * EulerWeightedCylinderEnergy.weightedMetricLoss ρ (fun (I : EulerGevreyMetricComparison.ExternalWord N) => ↑I.fst) K
(EulerGevreyMetricComparison.energyValues period q N hN u)
The actual derivative-loss Sobolev sum is controlled by metric roots with only the fixed base-order constant.