The actual natural/ACT base in the all-order local axis recursion #
The finite base functions below are the constructed holomorphic natural/ACT
functions. Every regularity field required by SlowRecursion is derived
from those functions. In particular the angular slow coefficient is C*f.
Holomorphic parameter extension of the evaluated axis space #
The extension is the convergent vertical Taylor series of the genuine compatible parameter jets. Its Cauchy--Riemann identity follows by termwise differentiation.
A sharp majorant retaining the binomial factor in the axis norm.
Uniform genuine factorial bounds for all evaluated parameter derivatives.
The positive radius is independent of the fixed radial derivative order k.
The rectangle above the real window used by the vertical Taylor series.
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A real-linear map specified by its real and imaginary partial derivatives.
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Vertical X, given by ((m : ℂ) + 1) * verticalTerm (fun n => c (n + 1)) m z.
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- NavierStokes.AxisHolomorphic.verticalX c m z = (↑m + 1) * NavierStokes.AxisHolomorphic.verticalTerm (fun (n : ℕ) => c (n + 1)) m z
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The actual complex extension, defined by a Taylor series in the imaginary direction.
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Summing the actual real derivatives gives the complex derivative of the vertical Taylor series. No analytic continuation is assumed.
The actual parameter jets of the evaluated profile, divided by their factorials.
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- NavierStokes.AxisHolomorphic.normalizedJet I ε A k Y m x = NavierStokes.AxisEvaluation.mixedSeries I ε A k m (Y, x) / ↑m.factorial
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Jet constant, given by geometricMoment (R / 20 / s) k / (1 - s).
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- NavierStokes.AxisHolomorphic.jetConstant R s k = NavierStokes.AxisHolomorphic.geometricMoment (R / 20 / s) k / (1 - s)
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The complex extension of the kth genuine radial derivative.
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Holomorphy of every fixed radial derivative, on one common parameter strip.
The bound is linear in the coefficient norm; the constant and strip width are independent of the particular solved coefficient vector.
Radial differentiation commutes with the constructed complex extension.
Every member of the holomorphic family is the actual corresponding radial derivative.
On the real axis, every genuine complex derivative is the corresponding already constructed compatible parameter jet.
Strict containment of real windows supplies a positive complex tube in the strip. Its width does not depend on any coefficient vector or derivative order.
A common, explicitly constructed holomorphic extension exists on a positive tube over every strictly smaller real window and compact radial interval.
The tube and all bound constants are chosen before the coefficient vector. Every radial derivative uses this same tube, and all complex parameter jets match the genuine real jets.
Joint smoothness of the actual holomorphic axis profile #
The uniform bounds for the next radial derivative imply continuity in the supremum norm on every closed parameter disk. A uniform mean-value remainder then identifies the actual derivative of the disk-valued curve. Iterating this argument and using the fixed-contour holomorphic-family theorem proves joint real smoothness of the constructed extension.
A continuous derivative in the supremum norm and the actual coordinate derivatives give the actual derivative of a compact-family curve.
The actual holomorphic profile restricted to a closed parameter disk.
The zero fallback in family is used only outside the proved radial domain.
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The next radial derivative controls a whole disk in the supremum norm.
The derivative in the disk supremum norm is the already constructed next radial derivative, with no regularity assumption on the output family.
Genuine joint real smoothness of every radial jet of the holomorphic axis profile on the same radial interval and the same parameter strip.
Every tube contained in the constructed strip inherits joint smoothness.
The jointly smooth extension is exactly the original real radial jet on the real slice, rather than a separately selected continuation.
A common positive tube and a genuine open radial neighborhood work for every coefficient vector and every radial derivative order. The extension is jointly real smooth, holomorphic in the complex parameter, uniformly bounded, and agrees with all actual real parameter jets.
A common holomorphic parameter neighborhood through initial activation #
All continuations below are explicit integrals of the actual natural slopes. The complex neighborhood is obtained from compactness and real positivity.
C point: an abbreviation for ℝ × ℂ.
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Radial differentiation preserves holomorphy on an arbitrary open radial domain. The difference quotients converge uniformly on each compact disk.
Segment: an abbreviation for ↥(Icc (0 : ℝ) 1).
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Holomorphic integration only requires smoothness near the actual compact integration segment, with no assumptions outside that segment.
Log point, given by (N.logTime p.1,p.2).
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Exp point, given by (N.endpoint*Real.exp p.1,p.2).
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Attach, with branches according to p.1 ≤ N.endpoint.
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- NavierStokes.ActivationHolomorphic.attach N F G p = if p.1 ≤ N.endpoint then F p else G (NavierStokes.ActivationHolomorphic.logPoint N p)
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An explicit natural extension, including the positivity neighborhood needed by the logarithm. It is constructed from the coefficient series below.
- f : CField
F of
NaturalExtension, of typeCField. - U : CField
U of
NaturalExtension, of typeCField.
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Log F, defined pointwise by Complex.log (E.f (expPoint N p)).
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- E.logF p = Complex.log (E.f (NavierStokes.ActivationHolomorphic.expPoint N p))
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Log U, defined pointwise by E.U (expPoint N p).
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- E.logU p = E.U (NavierStokes.ActivationHolomorphic.expPoint N p)
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Ref log, given by continuation δ E.logF.
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Ref axial, given by continuation δ E.logU.
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Ref F, given by attach N E.f (fun p => Complex.exp (E.refLog δ p)).
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- E.refF δ = NavierStokes.ActivationHolomorphic.attach N E.f fun (p : NavierStokes.ActivationHolomorphic.CPoint) => Complex.exp (E.refLog δ p)
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Ref U, given by attach N E.U (E.refAxial δ).
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- E.refU δ = NavierStokes.ActivationHolomorphic.attach N E.U (E.refAxial δ)
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Act log, given by controlled T κ (E.refLog δ).
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- E.actLog T κ δ = NavierStokes.ActivationHolomorphic.controlled T κ (E.refLog δ)
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Act axial, given by controlled T κ (E.refAxial δ).
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- E.actAxial T κ δ = NavierStokes.ActivationHolomorphic.controlled T κ (E.refAxial δ)
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Act F, given by attach N E.f (fun p => Complex.exp (E.actLog T κ δ p)).
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- E.actF T κ δ = NavierStokes.ActivationHolomorphic.attach N E.f fun (p : NavierStokes.ActivationHolomorphic.CPoint) => Complex.exp (E.actLog T κ δ p)
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Act U, given by attach N E.U (E.actAxial T κ δ).
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- E.actU T κ δ = NavierStokes.ActivationHolomorphic.attach N E.U (E.actAxial T κ δ)
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Parameter window, bundling left, right, nondegenerate.
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- NavierStokes.ActivationHolomorphic.parameterWindow = { left := -21 / 20, right := 21 / 20, nondegenerate := NavierStokes.ActivationHolomorphic.parameterWindow._proof_1 }
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Natural F as an element of ℂ.
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Natural U, given by complexU j p.2 + (1/(Λ : ℂ)) * AxisHolomorphic.complexProfile window d.coefficients.epsilon F.coefficients.2 0 (Λ*p.1) p.2.
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Compact real positivity produces a single complex tube, uniformly over the whole natural radial interval used by REF.
Construction from the actual coefficient witness. In particular the natural extension and its common positive neighborhood are not assumptions.
Radial jet, given by iteratedDeriv k (fun x => F (x,p.2)) p.1.
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- NavierStokes.ActivationHolomorphic.radialJet F k p = iteratedDeriv k (fun (x : ℝ) => F (x, p.2)) p.1
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Pressure, given by P0 p.2 + primitive (fun q => f q ^ 2) p.
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- NavierStokes.ActivationHolomorphic.pressure P0 f p = P0 p.2 + NavierStokes.ActivationHolomorphic.primitive (fun (q : NavierStokes.ActivationHolomorphic.CPoint) => f q ^ 2) p
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The actual base data on one common complex tube. The constructor below supplies the pressure extension from its proved defining integral.
- natural : NaturalExtension N Ω R
Natural of
InitialTube, of typeNaturalExtension N Ω R. - isOpen : IsOpen Ω
- elliptic_ne_zero (z : ℂ) : z ∈ Ω → NaturalAxisCoefficients.complexL h z ≠ 0
Pressure0 of
InitialTube, of typeℂ → ℂ.- pressure0_analytic : AnalyticOnNhd ℂ self.pressure0 Ω
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Ubar, given by average (E.U T κ δ).
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- E.Ubar T κ δ = NavierStokes.ActivationHolomorphic.average (E.U T κ δ)
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Pi, given by pressure E.pressure0 (E.f T κ δ).
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- E.Pi T κ δ = NavierStokes.ActivationHolomorphic.pressure E.pressure0 (E.f T κ δ)
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The width of the holomorphic domain is unchanged at every fixed radial derivative order. These are actual iterated derivatives of the functions.
The signed-square pullbacks are smooth and holomorphic through the axis, and are even in the signed radius.
Agreement includes the literal axis-to-radius average and pressure, with no independently prescribed moment data.
Actual coefficient profiles and the actual pressure datum construct the common tube. The width is chosen before the REF and ACT cutoff lengths.
The natural average recovered by complex integration is the original natural profile's actual average, including the regular value at the axis.
A conjugation-invariant open neighborhood whose real points remain in the real profile domain. It retains the entire closed physical window.
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Real fields, given by let P := StressActivation.FromReference.histories N hT hδ hδT κ P0 hP0 ![P.f, P.U, P.Ubar, P.pressure].
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Each base component is an actual member of the compatible function algebra; no separate jet data or extension hypothesis is supplied.
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- NavierStokes.ActualSlowAxis.element E hT hδ hδT κ hP0 S i = ⟨NavierStokes.ActivationHolomorphic.signedSquare (NavierStokes.ActualSlowAxis.fields E T κ δ i), ⋯⟩
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The canonical right jets agree with the actual smooth ACT jets at the axis as well as at every positive radius.
Base, constructed using SlowRecursion.makeBase.
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A fixed radial rectangle strictly containing the entire initial collar.
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Hierarchy used in actual slow axis.
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Tube width, given by Classical.choose (exists_tube_of_pressure_eq hp hP0 F hΛ hsmall hσ).
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- NavierStokes.ActualSlowAxis.tubeWidth hp hP0 F hΛ hsmall hσ = Classical.choose ⋯
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This witness is obtained from the actual coefficient-space natural solution and the proved pressure integral, not supplied by the caller.
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- NavierStokes.ActualSlowAxis.constructedTube hp hP0 F hΛ hsmall hσ = Classical.choice ⋯
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From natural, given by hierarchy (constructedTube hp hP0 F hΛ hsmall hσ) hT hδ hδT κ (actualPressure_smooth hp hP0) C.
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