Whole-lift bounds from the actual native copies #
The copy meeting a point is allowed to depend on both the band and the point. Closed, locally finite support cells give a genuine zero germ on their complement, including all derivatives. Constants in the native estimates are chosen before the band, copy, and evaluation point.
The Gaussian error is assembled as the sum of cutoff-derivative terms plus one uncovered-source term. In particular, the source is never summed once for every inactive copy.
Closed support cells, with a unique cell at a point. Neither a finite index set nor one cell covering the whole strip is required.
- locallyFinite (n : ℕ) : LocallyFinite (self.carrier n)
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Native estimates on the actual functions. Smoothness is local at the closed support cell; no continuation of the uncut function around the torus is imposed. The weight is evaluated at the actual global point.
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Gluing uses equality on neighborhoods, rather than equality of values or pointwise derivative limits.
The actual locally finite copy sum. Local finiteness is proved from support cells below; it is not encoded by replacing the sum with a selector.
Equations
- NavierStokes.PeriodizedWaveBounds.copySum f x = ∑' (i : I), f i x
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The proof also gives the very same prefix constants globally.
Only the primitive source is estimated on the uncovered set. This is useful when coverage gives a small tail instead of an identically zero one.
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Native bounds uniform also in an external spatial label. The lattice copy remains a separate index, so overlap among different labels is not mistaken for disjointness of copies of one label.
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Native cell, given by {z | g.coordinates k z.2 ∈ K}.
Equations
- NavierStokes.PeriodizedWaveBounds.nativeCell g K k = {z : P × NavierStokes.TorusInverse.Plane | g.coordinates k z.2 ∈ K}
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Compact native cells have a locally finite family of all lattice copies. This applies to a rectangle as well as the actual closed cutoff support.
Native cells, bundling carrier, closed, locallyFinite, unique.
Equations
- NavierStokes.PeriodizedWaveBounds.nativeCells g K hK hinj = { carrier := fun (n : ℕ) => NavierStokes.PeriodizedWaveBounds.nativeCell (g n) (K n), closed := ⋯, locallyFinite := ⋯, unique := ⋯ }
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Whole-lift weighted bounds for the literal common-copy sum. The native smoothness and all-jet estimates are needed only on their own support cell.
The Gaussian absorption argument is uniform in the native copy. Its only local field estimate is the weighted jet bound before absorption.
Local raw copies share one physical carrier and background. Their amplitudes and pressures may differ in every copy and need not be periodic.
- background : LinearWaveBounds.WaveCoefficients D
- amplitude : ℕ → I → D → HarmonicCalculus.ComplexVector
- source : ℕ → D → HarmonicCalculus.ComplexVector
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Raw, given by { a.background with amplitude := fun n => a.amplitude n i pressure := fun n => a.pressure n i }.
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Localized, given by (a.raw i).withCutoff (fun n => a.cutoff n i).
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Corrected, given by (a.raw i).corrected s d (fun n => a.cutoff n i).
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Local good, given by (a.raw i).constructedGood s d (fun n => a.cutoff n i) n.
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Local tail, given by d.Dfast (fun n => a.cutoff n i) n x • a.amplitude n i x.
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Local gaussian, given by excludedSlotError d (fun n => a.cutoff n i) (fun n => a.amplitude n i) a.source n.
Equations
- a.localGaussian d n i = NavierStokes.LinearWaveBounds.excludedSlotError d (fun (n : ℕ) => a.cutoff n i) (fun (n : ℕ) => a.amplitude n i) a.source n
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The single native cutoff is applied before periodization and curl.
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Common corrected, given by a.common.addAmplitude (a.common.curlCorrection s d).
Equations
- a.commonCorrected s d = a.common.addAmplitude (a.common.curlCorrection s d)
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An actual global good coefficient, assembled from the cutoff-and-curl formula on each native copy.
Equations
- a.globalGood s d n = NavierStokes.PeriodizedWaveBounds.copySum (a.localGood s d n)
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Global tail, given by copySum (a.localTail d n).
Equations
- a.globalTail d n = NavierStokes.PeriodizedWaveBounds.copySum (a.localTail d n)
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The shared source occurs once. This definition also makes sense off every native patch and preserves the uncovered-source term there.
Equations
- a.globalGaussian d n x = a.globalTail d n x + (1 - a.cutoffSum n x) • a.source n x
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The global Gaussian field has the full native error as its germ, with both terms and all cutoff derivatives unchanged.
The exact uncovered-source term persists outside the cutoff cells.
Local native cancellation implies cancellation everywhere on the whole lift. The source need not vanish on the uncovered complement.
Global classes for the actually localized common velocity and pressure. The input fields need be smooth only at their own native support cells.
If the literal incoming source is supported in the union of native cores, the global Gaussian error is flat whenever the native error jets are uniformly flat. No global error class is assumed.
A nonzero uncovered source is retained and estimated from its own primitive jets on that complement.
The homogeneous construction has only the periodized derivative tail.
The global differential formula corresponding to the sum of native good terms. Its equality with that sum is proved from actual germs.
Equations
- a.differentialGood s d n x = a.common.principalVelocity s d (a.common.curlCorrection s d) n x + (a.commonCorrected s d).remainder s d n x
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Only the carrier, geometry, and base fields of this coefficient are used in the background estimates.
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Primitive background estimates and native localized velocity/pressure jets imply the actual global curl correction and good-remainder classes. Neither a local nor a global remainder-class hypothesis is used.
Primitive native amplitude/source/cutoff jets and a Gaussian envelope prove flatness of the actual two cutoff products, uniformly over every copy. The central alternative allows transverse regions where both fields vanish.
The whole-lift Gaussian estimate derives every native output jet from primitive data, then glues using the actual periodized fields and source coverage. No Gaussian error class is an input.
The globally assembled velocity is the actual curl of the globally assembled potential whenever the native construction has that identity.
A local differential identity is transported through full neighborhood germs, so the support boundary contributes no extra divergence.
Deck reindexing is sufficient for common-field periodicity; individual uncut copies need not be periodic.
Actual complex copy solves with arbitrary band-dependent entry/exit
times. In particular, a transported clock may use exit = length / clock.
The tangent coefficients, source, geometry, and frequency are the actual
inputs of complexCopyVelocity and its projected pressure.
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The data-only binding to the actual fixed-reference particular solve. The source is the literal coefficient of the incoming harmonic residual; no inverse, output field, or residual witness is supplied separately.
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This is the same actual periodization as ParticularWaveAssembly,
with its single physical reference and original source.