Mixed candidate assembly from primitive axis zero germs #
Potential increments may be arbitrary physical fields. Their local axis zero germs replace the copy-potential representation used by the original consumer. All raw estimates, finite residual estimates, shrinking support and finite endpoint-extension obligations remain unchanged. The diagonal schedule, axis blow-up, infinite residual limits and candidate consequences are derived.
Consequences of the actual candidate fields #
No candidate existence is asserted here. The first results use precisely
CandidateProperties. Force derivatives at initial time are taken within the
physical future half-space. For the actual globally smooth constructed force
these are proved equal to its ordinary full derivatives.
A concrete periodic H³ supremum bound #
Coordinate fundamental-theorem-of-calculus estimates are iterated over the
unit cube. All derivatives below are the ordinary Frechet coordinate
derivatives on ProblemStatement.Space.
Replace coord, given by x + (s - x i) • coordinateVector i.
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- NavierStokes.PeriodicSobolev.replaceCoord i x s = x + (s - x.ofLp i) • NavierStokes.ProblemStatement.coordinateVector i
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Unit interval averaging after replacing one coordinate.
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- NavierStokes.PeriodicSobolev.average i h x = ∫ (s : ℝ) in Set.Icc 0 1, h (NavierStokes.PeriodicSobolev.replaceCoord i x s)
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Sq field, given by ‖f x‖ ^ 2.
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- NavierStokes.PeriodicSobolev.sqField f x = ‖f x‖ ^ 2
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Cube point, given by toSpace ![a, b, c].
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An explicit iterated product Lebesgue integral on the unit cube.
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- NavierStokes.PeriodicSobolev.boxIntegral h = ∫ (a : ℝ) (b : ℝ) (c : ℝ) in Set.Icc 0 1, h (NavierStokes.PeriodicSobolev.cubePoint a b c)
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The eight mixed derivatives with each coordinate used at most once. Every derivative here has total order at most three.
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Three successive coordinate FTC estimates. No periodicity is needed for the estimate at a point already in the closed unit cube.
The pointwise estimate on all of space follows by an explicitly proved integer-lattice reduction to the cube.
A derivative definition of the H³ energy. Every ordered coordinate derivative of order two and three is included, as are the zeroth and all first derivatives. The selected mixed derivatives have an extra copy; these fixed positive multiplicities only change the choice of H³ norm.
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Derivative H3 norm, given by Real.sqrt (derivativeH3Energy f).
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A concrete H³-to-supremum estimate with the harmless numerical constant 3.
Derivative H3 unbounded at one, given by ∀ M : ℝ, 0 < M → ∀ δ : ℝ, 0 < δ → ∃ t : ℝ, t ∈ Ioo (1 - δ) 1 ∧ M < derivativeH3Norm (fun x => u (t, x)).
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Pointwise speed blow-up forces unbounded H³ norm arbitrarily close to time one, by the proved embedding rather than an assumed Sobolev theorem.
The candidate specification therefore entails the explicitly defined H³ norm blow-up condition, without asserting existence of a candidate.
Conditional maximal classical lifespan of the candidate #
An actual CandidateProperties witness has maximal classical lifespan one.
The proof uses the proved periodic uniqueness theorem and a compactness bound
for a continuous periodic field across time one. It assumes no general
Navier--Stokes existence theorem and never identifies pressure gauges.
Lifespan domain, given by Ico 0 T ×ˢ univ.
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A finite, positive classical lifespan for the exact viscosity-one PDE. The initial datum is an actual spatial velocity field. Pressures are retained as witnesses but are never required to agree with a different gauge.
- velocity_smooth : ContDiffOn ℝ (↑⊤) u (lifespanDomain T)
- pressure_smooth : ContDiffOn ℝ (↑⊤) p (lifespanDomain T)
- velocity_periodic : ProblemStatement.UnitSpatialPeriodsOn (Set.Ico 0 T) u
- pressure_periodic : ProblemStatement.UnitSpatialPeriodsOn (Set.Ico 0 T) p
- divergence_free (t : ℝ) : t ∈ Set.Ico 0 T → ∀ (x : ProblemStatement.Space), ProblemStatement.spatialDivergence u t x = 0
- navier_stokes (t : ℝ) : t ∈ Set.Ioo 0 T → ∀ (x : ProblemStatement.Space), ProblemStatement.navierStokesResidual u p t x = f (t, x)
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The local equation and arbitrary initial datum, independently of periodicity.
Velocity agrees on, given by ∀ t ∈ Ico (0 : ℝ) T, ∀ x : Space, u (t, x) = v (t, x).
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An extension has a strictly larger time interval and preserves the velocity on the entire original interval. Its pressure may have a different time-dependent spatially constant normalization.
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Is maximal classical solution, given by ClassicalSolution f initial T u p ∧ ¬HasClassicalExtension f initial T u.
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The actual set of finite positive times supported by classical solutions for the fixed force and initial datum. No existence is built into the definition.
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Any two actual classical solutions agree on their common interval. This is derived by restriction to each compact subinterval and the proved energy uniqueness theorem. Only velocity equality is asserted.
Compactness bounds a relatively continuous periodic field on an entire closed time slab, uniformly over all spatial points.
Unbounded speed rules out even a continuous periodic extension through time one, once agreement with the original field is known.
No classical solution for the same force and datum can have lifespan larger than one. Uniqueness supplies the required pre-one agreement.
The given lifespan-one solution is maximal under extension of its velocity. No literal equality between pressure representatives is required.
Any shorter classical solution extends by the actual candidate field.
Every maximal classical solution for these data has exactly lifespan one.
There is a greatest admissible finite classical lifespan, and it is one. Existence at that time comes solely from the supplied candidate witness.
The entire set of finite admissible classical lifespans is (0,1].
A global classical solution would restrict to a forbidden lifespan greater than one. This makes the exclusion of infinite-time continuation explicit without assuming any existence theorem.
The specified force must be nonzero somewhere before the breakdown time. Otherwise uniqueness identifies the candidate with the zero solution.
The physical full spacetime jet, including its one-sided value at time zero.
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Compact future time support gives arbitrary polynomial decay of the physical one-sided jets, using only future smoothness and future periodicity.
The ordinary tensor bound for the same force. Global smoothness is provided by the actual force constructor; negative-time periodicity is not needed.
All conclusions here follow from the exact candidate properties alone.
- maximal : MaximalLifespan.IsMaximalClassicalSolution f (fun (x : ProblemStatement.Space) => 0) 1 u p
- lifespans : (MaximalLifespan.admissibleLifespans f fun (x : ProblemStatement.Space) => 0) = Set.Ioc 0 1
- h3_unbounded : PeriodicSobolev.DerivativeH3UnboundedAtOne u
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Retaining one growing physical trajectory strengthens unboundedness to a genuine limit. No monotonicity of the velocity or its norm is assumed.
The exact mixed assembly inputs produce one force carrying all the lifespan, Sobolev, and full force-jet conclusions. Nothing is assumed about the output force, the infinite-time PDE, or the Sobolev embedding.
Retaining the actual mixed candidate and its consequences #
The finite-stage inputs are exactly those of
MixedCandidateAssembly.candidate_of_finite_stages. The same selected
schedule supplies the actual velocity and pressure sums, their endpoint
extensions, and the force with all proved consequences.
All properties of the single scale sequence selected from the finite stage estimates, including smooth sums and vanishing residual jets.
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The original finite-stage inputs produce one schedule and its actual activated fields, together with the full mixed-force conclusion.
A property of the actual primitive field on a local physical domain. The zero neighborhood may depend on the point and on the stage.
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- NavierStokes.GermCandidateAssembly.AxisZeroOn Ω f = ∀ w ∈ Ω, NavierStokes.PhysicalGraphBounds.radialProjection w = 0 → f =ᶠ[nhds w] fun (x : NavierStokes.ProblemStatement.SpaceTime) => 0
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The original concrete potential-stage data supplies the new hypothesis directly. No regularity assertion about its copy representation is added.
Literal supported mean-stream potentials satisfy the same local property.
The base and finite initialization retain the same zeroth cutoff.
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- NavierStokes.GermCandidateAssembly.initializedSeries base initial stages 0 = fun (w : NavierStokes.ProblemStatement.SpaceTime) => base w + initial w
- NavierStokes.GermCandidateAssembly.initializedSeries base initial stages j.succ = stages j
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Substituting the original stage fields gives exactly the original series.
Local finiteness intersects only finitely many stage-dependent zero neighborhoods. On the zeroth cutoff plateau the actual potential sum has the base germ, including the finite initialization.
Potential stages, given by initializedSeries (TailGaugePotential.finalPotential H v upper bandFloor) initial stages.
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The actual mixed diagonal agrees at the origin with the constructed slow base for all sufficiently late times. Its blow-up is not an input.
This has the original finite-stage obligations, with arbitrary physical potential increments and their primitive local axis zero germs. It returns the same selected schedule, exact mixed fields and full force consequences.
The manuscript's exact candidate target follows from the same primitive finite-stage data; no separate candidate witness is assumed.