All-jet bounds for actual nonlinear wave interactions #
Only stripped coefficients are placed in the weighted classes. The carrier is retained in the exact differential identities and is removed before estimating.
Evaluation of the actual derivative field at an actual vector field.
Actual geometric coefficient fields, rather than assumed derivative closure.
- radial : ℕ → D → D
- angular : ℕ → D → D
- axial : ℕ → D → D
- radial_class : WeightedClasses.UnweightedClass s (-κ) self.radial
- axial_class : WeightedClasses.UnweightedClass s 1 self.axial
- inverse_radius_class : WeightedClasses.UnweightedClass s 0 fun (n : ℕ) (x : D) => (self.radius n x)⁻¹
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Wave vector, given by ∀ i, WaveClass s P α (fun n x => a n x i).
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- NavierStokes.WaveInteractionBounds.WaveVector s P α a = ∀ (i : Fin 3), NavierStokes.WeightedClasses.WaveClass s P α fun (n : ℕ) (x : D) => a n x i
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Mean vector, given by MeanClass s (μ + 1) (fun n x => a n x 0) ∧ MeanClass s μ (fun n x => a n x 1) ∧ MeanClass s μ (fun n x => a n x 2).
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Angular independent, given by ∀ n i x, x ∈ s.domain → along (G.angular n) (fun y => a n y i) x = 0.
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- NavierStokes.WaveInteractionBounds.AngularIndependent G a = ∀ (n : ℕ) (i : Fin 3), ∀ x ∈ s.domain, NavierStokes.HarmonicCalculus.along (G.angular n) (fun (y : D) => a n y i) x = 0
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Stripped transport as an element of Family D.
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The exact phase-sum coefficient of the actual bilinear differential operator.
Wave mean coefficient as an element of Family D.
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Both cross-advections, with the radial mean improvement explicitly used.
The exact divergence cancellation, before taking any norm or any jet.
Same coefficient as an element of Family D.
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All derivatives of the longitudinal contraction are estimated through the actual divergence identity, including derivatives of the phase normal.
Conjugate family, defined pointwise by star (a n x i).
Equations
- NavierStokes.WaveInteractionBounds.conjugateFamily a n x i = star (a n x i)
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A nonzero integer first harmonic and a bounded second harmonic give the precise uniform ratio needed by the divergence cancellation.
Vanishing of a product on an open set forces the differentiated second factor to vanish wherever the first factor is nonzero.
The actual physical partition masks and covered native slot profiles, with arbitrary complex component multipliers (including harmonic carriers).
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The complex operator restricts to the real cylindrical bilinear operator.
Real bilinear products require both ordinary and conjugate harmonic pairs.
Exact real reconstruction: the two output harmonics are the sum and difference of the two input harmonics. No angular averaging is assumed.
Equal input frequencies have an exact doubled-frequency term and an opposite-frequency mean term, each with its real reconstruction factor.
Exact curl realization supplies the solenoidality used in the saved half-power estimate. The equality is required on a neighborhood, so every derivative of the actual field participates in the identity.
A direct specialization to the manuscript's constructed vector potential. Its curl remainder is part of the realized coefficient on both sides.
Multiplying by the actual curl of the second field still vanishes on disjoint supports; this includes every coefficient derivative and frame term.
The separated, covered slots make the actual curl-wave interaction zero. This remains true at the boundaries of the supports.
The real bilinear operator estimated above is obtained from the actual Cartesian derivative by the cylindrical frame, on positive radius.
Fixed geometry, bundling radius, radial, angular, axial and the required
compatibility proofs.
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The input wave classes in the interaction estimate can themselves be generated from seed amplitudes by the proved curl-remainder bounds.
Finite harmonic sets generated by retention, conjugation and quadratic interaction. The recursive definition retains zero harmonics as well.
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- NavierStokes.WaveInteractionBounds.stageHarmonics initial 0 = initial
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A complete ordered interaction endpoint: the coefficient is in the claimed all-jet class and reconstructs the actual differential product.