Actual harmonic wave-update interactions #
The nonlinear terms are finite convolutions of actual differentiated fields. All-jet classes are lifted and restricted by proved norm-one linear pullbacks before applying the full cylindrical divergence cancellation.
Actual harmonic residual changes under a mean increment #
The wave and its pressure are held fixed. Every coefficient below belongs to
the actual differential residual in HarmonicResidual; excluded errors are
kept as separate additive differences.
The two actual cross-advections at coefficient level, before any zero-mode deletion.
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Triple field, given by ![(h.radial n x : ℂ), (h.angular n x : ℂ), (h.axial n x : ℂ)].
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Block amplitude, defined pointwise by HarmonicResidual.realCoefficients (b.velocity n i).
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Mean cross, constructed using crossCoefficients.
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General additive error differences are retained, including their zero modes.
Bounds on the original coefficient domain #
The slow coefficient geometry has no artificial angular coordinate. The actual separate angular carrier is accounted for explicitly below.
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Slow normal, constructed using phaseNormal.
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The separate angular phase term has the same carrier loss as the slow phase term.
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The actual output residual blocks #
An axisymmetric alias change has no effect on nonzero harmonics. The Gaussian field is unchanged, so it cancels without a size assumption.
The resulting all-order class is derived for the actual residual-block coefficient difference, with no estimate assumed for that difference.
Residual difference block, bundling velocity, pressure, frequency, phase and the
required compatibility proofs.
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Frequency support and physical cross-advection #
Transport difference as an element of Coefficients D.
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A mean-only update preserves the existing harmonic-value bound.
The same finite coefficients evaluate to the two actual cross-advection fields.
The computed block differences reconstruct the actual change in the good nonconstant residual. This is an identity, with no uniform sum estimate assumed.
A recomputed mean pressure is unrestricted in this application; its contribution is in the mean residual, not in the fixed label's wave block.
Pullback strip, bundling domain, isOpen_domain, epsilon, epsilon_pos and the
required compatibility proofs.
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Projection, given by ContinuousLinearMap.fst ℝ D ℝ.
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Inclusion, given by (ContinuousLinearMap.id ℝ D).prod (0 : D →L[ℝ] ℝ).
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Product strip, given by pullbackStrip s projection.
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Lifted geometry, bundling radius, radial, angular, axial and the required
compatibility proofs.
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Full phase, given by b.phase n p.1 + ((b.angularFrequency n : ℝ) / b.frequency n) * p.2.
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- NavierStokes.HarmonicWaveInteraction.fullPhase b n p = b.phase n p.1 + ↑(b.angularFrequency n) / b.frequency n * p.2
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Amplitude, defined pointwise by blockAmplitude b n i j x.
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Single mode, constructed using HarmonicResidual.vectorField.
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The primitive divergence condition is imposed on each actual harmonic field.
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The exact ordered coefficient from harmonic j advecting harmonic l.
The first index is carried by the first input function; l enters the derivatives.
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The first harmonic is used only through its genuine divergence equation. Its carrier cancels against the second harmonic with a bounded integer ratio.
Oscillatory input blocks have no stored velocity at harmonic zero.
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A common finite range is fixed for the whole family, not chosen anew on each band. This is the finiteness needed by the uniform class estimates.
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Coefficients evaluated using the original label's carrier.
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The updated label retains its carrier, including its angular frequency.
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Block transport as an element of HarmonicResidual.BlockCoefficients D.
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All three actual quadratic terms introduced by adding one wave block.
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Nonlinear error block, bundling velocity, pressure, frequency, phase and the
required compatibility proofs.
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Identification with the actual differentiated residual #
The coefficient identity is extracted from the proved product rules for the actual cylindrical differential operators.
Linear coefficients as an element of HarmonicResidual.BlockCoefficients D.
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The complete wave change before removing its zero mode. The Gaussian increment and the alias difference remain literal coefficient fields.
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Interaction coefficients, given by meanCross c u.mean (withCarrier a b) + nonlinearCoefficients c a b.
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Interaction block, bundling velocity, pressure, frequency, phase and the required
compatibility proofs.
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Linear good block, bundling velocity, pressure, frequency, phase and the required
compatibility proofs.
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The zero-mode alias remains in the complete residual but vanishes under the actual nonconstant projection.
Mean-wave and wave-wave terms retain their separate gains until the final minimum. No class hypothesis is imposed on their output.
Extracting the actual divergence condition #
Divergence coefficients, constructed using differentiate.
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Finite harmonic values, realness, and actual label reconstruction #
Wave residual difference block, bundling velocity, pressure, frequency, phase and
the required compatibility proofs.
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The grouped difference is the change in the actual good nonconstant PDE
residual. Cross-label products vanish by the disjoint supports contained in
ExtractionRegular; finite sums alone are not used as uniform estimates.