Residual and axis values of the asymptotically summed slow base #
The series used here is the actual locally finite series in SlowBorelBase.
The radial streams are summed before taking their Cartesian curl.
Regular finite tail coefficients at the symmetry axis #
The radial flux is V_n = X * beta_n. This module uses that identity in the
actual finite tails. The resulting coefficient functions contain no division
by X; their finite indices and powers of q are unchanged.
The transport kernel after canceling the radial flux factor.
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The radial transport kernel divided by its factor X.
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Same omitted pairs and final viscosity term as the original transport tail.
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Each original radial pressure coefficient divided by 2X, with the
factor canceled before evaluation. In particular this defines its smooth
extension at X = 0, rather than using total division there.
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- NavierStokes.AxisTailRegularity.regularPressureTerm N h C phi u beta (Sum.inr (some ij)) = fun (w : NavierStokes.SimilarityProfile.InnerPoint) => -C⁻¹ ^ 2 * (phi ij.1 w * phi ij.2 w)
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Radial transport is genuinely divisible by X, including at the axis.
All radial pressure branches have the factor 2X before division.
Local identification with the actual coefficient functions #
Only agreement of the local coefficient germs is required. Global
extensions may have different values for negative X.
Equality on the nonnegative part of an open set gives the needed germ at every positive radial coordinate. No negative-coordinate matching is used.
The same finite monomials, with regular inner coefficients #
The physical radial denominator contributes precisely the original
single power of q. Regularizing X costs no further power.
Zero positive-order coefficient values are preserved by the actual sum, irrespective of the cutoff schedule.
Summing and cutting the streams before differentiation preserves the leading axial value exactly when the positive axial axis constants vanish.
The concrete Borel base retains the leading axial blow-up. No agreement with an unspecified limiting field is an input.
The homogeneous lift is defined before solving the implicit coordinate equation. This makes its degree an exact scaling identity.
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Every smooth inner monomial has actual physical jets with a loss of one power per derivative. The constant is derived by compactness and scaling.
A local smooth coefficient has a genuine smooth extension on a neighborhood of a compact set. This is used only to estimate its local jets.
Local coefficient regularity suffices for the physical estimate. All
coefficients with 1/X or 1/L may therefore stay on their true domain.
Cartesian monomial, given by SimilarityProfile.pullback h b f (AxisymmetricFields.profilePoint z.1 z.2).
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On a fixed compact Cartesian set, polynomial reconstruction from squared radius adds a constant but no further loss of powers.
A finite family of genuine local coefficient functions yields the expected power bound for every actual Cartesian jet of its sum.
The filter carries only geometric information: bounded physical coordinates, a fixed inner radial window, and scale tending to zero.
- carrier : Set ProblemStatement.SpaceTime
Carrier of
PhysicalApproach, of typeSet SpaceTime. - past : ∀ᶠ (z : ProblemStatement.SpaceTime) in l, z.1 < 1
- radial : ∀ᶠ (z : ProblemStatement.SpaceTime) in l, (SlowBorelBase.cartesianChart h z).2.1 ∈ Set.Icc lo hi
- scale : Filter.Tendsto (fun (z : ProblemStatement.SpaceTime) => (SlowBorelBase.cartesianChart h z).1) l (nhds 0)
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Past, given by Iio 1 ×ˢ univ.
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Profile past, given by Iio 1 ×ˢ univ.
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Potential from scalars, given by (-(1 / 2 : ℝ) * z.2 1 * H z) • coordinateVector 0 + ((1 / 2 : ℝ) * z.2 0 * H z) • coordinateVector 1 + K z • coordinateVector 2.
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Basis injection, given by (ContinuousLinearMap.id ℝ ℝ).smulRight (coordinateVector i).
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Prefix stream, given by physicalUncutPrefix h (-CoordinateAlgebra.A h) (bundleComponent C d 0) J.
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Prefix swirl, given by physicalUncutPrefix h (1 / 2 - CoordinateAlgebra.A h) (bundleComponent C d 1) J.
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Prefix potential, given by AxisymmetricFields.potential (prefixStream J h C d) (prefixSwirl J h C d).
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Summed potential, given by AxisymmetricFields.potential (streamFactor a h C d) (swirlPotential a h C d).
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Prefix velocity, given by SpatialCurl.spatialCurl (prefixPotential J h C d).
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Prefix pressure, given by cartesianUncutPrefix h (-2 * CoordinateAlgebra.A h) (bundleComponent C d 2) J.
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Both potentials share the same derived cutoff schedule. Their difference from a fixed prefix has a finite order increasing with the prefix.
Profile derivative, given by fderiv ℝ F p v.
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- NavierStokes.BaseResidual.profileDerivative v F p = (fderiv ℝ F p) v
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Cartesian derivative, given by profileDerivative v F (AxisymmetricFields.profilePoint z.1 z.2).
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A physical derivative of the actual profile remainder is estimated before the polynomial Cartesian coordinate map is applied.
Annular past, given by {z | z.1 < 1 ∧ 0 < AxisymmetricFields.radialEnergy z.2}.
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Radial power, given by (2 * AxisymmetricFields.radialEnergy z.2) ^ c.
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The manuscript's tangential radial stress operator.
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- NavierStokes.BaseResidual.stressForce theta axial z = NavierStokes.SlowResidualMatching.tangentialStressForce theta axial z.1 z.2
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Lift profile, given by F (AxisymmetricFields.profilePoint z.1 z.2).
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Stress angular scalar, given by -2 * (cartesianDerivative (0, (1, 0)) theta z + 2 * radialPower (-1) z * liftProfile theta z).
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Stress axial scalar, given by -(radialPower (1 / 2) z * cartesianDerivative (0, (1, 0)) axial z + radialPower (-(1 / 2)) z * liftProfile axial z).
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Finite loss for the actual stress differential operator, obtained from the profile derivative and reciprocal-radius factors.
Prefix stress theta, given by physicalUncutPrefix h (-CoordinateAlgebra.A h - 1 / 2) (bundleComponent C d 3) J.
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Prefix stress axial, given by physicalUncutPrefix h (-CoordinateAlgebra.A h - 1 / 2) (bundleComponent C d 4) J.
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Base stress force, given by stressForce (baseStressTheta a h C d) (baseStressAxial a h C d).
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Prefix stress force, given by stressForce (prefixStressTheta J h C d) (prefixStressAxial J h C d).
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The stress tail is passed through the actual cylindrical operator. No force-tail estimate is assumed.
Charted domain, given by {z | z.1 < 1 ∧ (cartesianChart h z).2 ∈ U}.
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Radial vector, given by z.2 0 • coordinateVector 0 + z.2 1 • coordinateVector 1.
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Angular vector, given by -z.2 1 • coordinateVector 0 + z.2 0 • coordinateVector 1.
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Assemble components, given by R z • radialVector z + A z • angularVector z + Z z • coordinateVector 2.
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Transport tail field, given by transportTail N (cartesianChart h z).1 h e α v u f (cartesianChart h z).2.
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Radial tail field, given by pressureTail N (cartesianChart h z).1 h C f (cartesianChart h z).2 / (2 * AxisymmetricFields.radialEnergy z.2).
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Radial tail expression, given by ∑ i ∈ pressureIndices N, cartesianMonomial h (pressurePower N h i - 1) (fun w => pressureTerm N h C f i w / (2 * w.1)) z.
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The actual finite residual left by the recurrence has arbitrary increasing order as the truncation index increases. Its rate is derived from the explicit omitted monomials, not supplied as a hypothesis.
Base residual, given by navierStokesResidual (baseVelocity a h C d) (basePressure a h C d) z.1 z.2 - baseStressForce a h C d z.
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The finite identity in this interface is the exact identity for the displayed uncut stream prefixes. It contains no asymptotic hypothesis.
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The nonlinear residual estimate for the concrete asymptotic sum. Every rate used in its proof is derived above from smooth coefficients, the chosen scales, and the explicit finite identities.
All physical Cartesian space-time jets of the actual nonlinear error are flat along every fixed compact annular approach to q=0.
Polynomial losses in the two logarithmic edge distances are allowed. The estimate is on the full derivative tensor, including mixed derivatives.
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Positive scale, given by {y | 0 < y.1}.
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First cutoff, given by powerStage (a 1) (2 * h) (fun _ => 1).
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- NavierStokes.BaseResidual.firstCutoff a h = NavierStokes.SlowBorelBase.powerStage (↑(a 1)) (2 * h) fun (x : NavierStokes.SlowBorelBase.Inner) => 1
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Weighted summation of the full coefficient vector. The first coefficient uses polynomial edge bounds; higher coefficients use their genuine smooth quotients by the flat weight and the explicitly chosen cutoff schedule.
Both independent slots of the virtual tangential tensor.
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- NavierStokes.BaseResidual.stressPair d j w = (d.stressTheta j w, d.stressAxial j w)
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Higher stress quotient, with branches according to j ≤ 1.
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- NavierStokes.BaseResidual.higherStressQuotient d zeta j w = if j ≤ 1 then 0 else (zeta w)⁻¹ • NavierStokes.BaseResidual.stressPair d j w
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A common enlarged bundle controls the actual base fields and the higher-order stress quotients by the same cutoff sequence.
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- NavierStokes.BaseResidual.weightedBundle C d zeta j w = (NavierStokes.SlowBorelBase.coefficientBundle C d j w, NavierStokes.BaseResidual.higherStressQuotient d zeta j w)
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Normalized tensor, given by slowSum a h (stressPair d).
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Both physical stress slots have exactly the common prefactor used in the manuscript. The normalized tensor is the actual cut sum.
The full normalized two-slot tensor differs from its leading value by O(q^h), with the allowed polynomial losses at both flat edges.
The common schedule is constructed from coefficient smoothness. The weighted estimate is an output, not part of the admissibility assumptions.
Log weight profile, given by weight c a b w.2.
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Weight left factor, bundling coefficient, order, width, width_pos and the required
compatibility proofs.
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Weight right factor, bundling coefficient, order, width, width_pos and the required
compatibility proofs.
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Swap inner, bundling toLinearEquiv, norm_map.
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- NavierStokes.BaseResidual.swapInner = { toLinearEquiv := LinearEquiv.prodComm ℝ ℝ ℝ, norm_map' := NavierStokes.BaseResidual.swapInner._proof_1 }
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Active window, given by Ioo (Real.exp a) (Real.exp b) ×ˢ Icc (-1) 1.
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Active zeta, given by radialWeight c a b w.1.
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Active delta, given by edgeDistance a b (Real.log w.1).
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The actual two-edge Gaussian weight has the polynomial derivative losses used in the summation theorem. This is derived from its edge factors.
A common inner zero region for every actual stress coefficient.
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The stress-force tail estimate also holds on boxes meeting the axis: the apparent reciprocal-radius singularities lie in a common zero region.
Equality of continuous physical fields away from the symmetry axis extends across it. The proof uses an explicit Cartesian perturbation.
The regular descriptors are actual finite sums of physical monomials.
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Regular radial field, given by ∑ i ∈ pressureIndices N, cartesianMonomial h (pressurePower N h i - 1) (regularPressureTerm N h C phi u beta i) z.
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Regular truncation, constructed using assembleComponents.
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Cancellation of the radial factor loses no power of q, including
for all physical derivatives on compact sets meeting the axis.
The exact finite physical error has a smooth continuation through the axis, and its physical jet bounds follow from its regular monomials.
The actual nonlinear error is flat in all physical jets on compact similarity boxes, including the symmetry axis. Smooth extensions are used only for the coefficients; their positive-side values are specified here.
Higher-order support is strictly interior to the active annulus. The interval and its distance from the edges may depend on the order.
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Outer window, given by Ico cut (Real.exp right) ×ˢ Icc (-1) 1.
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Compact middle-region bounds and actual zero germs at the inner edge extend an outer collar estimate to the entire active annulus.
The first-order collar bound is imported from the actual backward viscous stress primitive. Only its equality with the coefficient is supplied.
A common scale sequence with the full weighted tensor estimate, constructed from support, smoothness, and the actual first-order primitive. No tensor estimate or summation-tail estimate is assumed.