The actual native chart scales #
The floor index is the one defined from the manuscript's logarithmic formula
in SlotColoring. This module derives the coefficient comparisons in (25),
their reciprocal bounds, the rounded carrier scale, and polynomial/exponential
decay along the actual dyadic sequence.
Physical grid labels, bounded degree, and an explicit finite coloring #
Labels consist of a dyadic level, three integer grid coordinates, and a sign.
The physical mesh at exponent a is 2^(-n*a)/n^6, namely the mesh
S_n^-3 with S_n=n², rescaled by Q_n^a with Q_n=2^-n.
Closed boxes of two mesh widths include the fixed small enlargement of the
one-mesh supports in the manuscript.
Grid: an abbreviation for Fin 3 → ℤ.
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- NavierStokes.SlotColoring.Grid = (Fin 3 → ℤ)
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Label: an abbreviation for ℕ × (Grid × Bool).
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Dyadic Q, given by (2 : ℝ) ^ (-(n : ℝ)).
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- NavierStokes.SlotColoring.dyadicQ n = 2 ^ (-↑n)
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The exact enlarged-box interaction relation used for coloring.
- overlap : (physicalBox D L ∩ physicalBox D M).Nonempty
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Color data, given by (⟨L.1 % 9, Nat.mod_lt _ (by norm_num)⟩, (fun j => intColor (L.2.1 j), L.2.2)).
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Color, given by (Fintype.equivFin Palette) (colorData L).
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A reusable one-dimensional bound: overlapping intervals force the finer grid index to lie within a fixed distance of the rescaled reference index.
Index center, given by ⌊width D j L.1 / width D j m * (L.2.1 j : ℝ)⌋.
Equations
- NavierStokes.SlotColoring.indexCenter D L m j = ⌊NavierStokes.SlotColoring.width D j L.1 / NavierStokes.SlotColoring.width D j m * ↑(L.2.1 j)⌋
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Candidate grids, given by Fintype.piFinset (fun j => Finset.Icc (indexCenter D L m j - (indexRadius D : ℤ)) (indexCenter D L m j + (indexRadius D : ℤ))).
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- One or more equations did not get rendered due to their size.
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Candidates, given by (Finset.Icc (L.1 - 4) (L.1 + 4)).biUnion (candidatesAtLevel D L).
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- NavierStokes.SlotColoring.candidates D L = (Finset.Icc (L.1 - 4) (L.1 + 4)).biUnion (NavierStokes.SlotColoring.candidatesAtLevel D L)
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Degree bound, given by 18 * (2 * indexRadius D + 1) ^ 3.
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- NavierStokes.SlotColoring.degreeBound D = 18 * (2 * NavierStokes.SlotColoring.indexRadius D + 1) ^ 3
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The actual finite neighbor set, obtained by filtering an explicit finite box.
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Uniform degree control for every dyadic level, grid point, and sign.
The expanding eigenvalue of the actual covering matrix.
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The real expression whose floor defines the manuscript's native index.
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Native index, given by ⌊nativeArgument h n⌋₊.
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Native gap budget, given by (4 * (1 + h) * Real.log 2 + 2 * Real.log 5) / Real.log coverGrowth.
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Native gap, given by ⌈nativeGapBudget h⌉₊ + 1.
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n=4 is already a valid uniform threshold for nonnegative native indices
when h≥0; the manuscript subsequently retains still larger bands.
The constructed finite coloring feeds the proved rational-slot geometry using the manuscript's actual native covering index, with no coloring or native-index-gap assumption.
Native index: an abbreviation for SlotColoring.nativeIndex h n.
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Radial coefficient, given by Lambda ^ nativeIndex h n * Q n ^ (radialExponent h / 2).
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- One or more equations did not get rendered due to their size.
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A coarse explicit bound suffices to show that the radial power is positive.
This includes the manuscript's range 0<h<1/2, and in fact every h≥0.
The radial coefficient is an exact power of the time coefficient, with the explicit small-viscosity loss.
The full M_i comparison in (25), obtained from the actual native index.
Slot length, given by 2 * r0 / timeCoefficient h n.
Equations
- NavierStokes.ChartScales.slotLength r0 h n = 2 * r0 / NavierStokes.ChartScales.timeCoefficient h n
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The carrier is the genuine rounded integer frequency used in the manuscript.
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Every fixed real power of the slow scale is dominated by every positive
power of the actual small-viscosity scale, provided h>0.
The rounding error 1/k, multiplied by any fixed slow power, also
vanishes along the actual dyadic sequence.