Endpoint-preserving periodic reduction #
This file joins the periodic cut average from PeriodicQuotient to the
endpoint-preserving primitive lattice estimate. The primitive pairings are
aggregated by their lower-half cut before the finite cut lift is enlarged
to a complete lattice box. This ordering is essential: enlarging one fixed
pairing to the complete across-pairing sum and only then summing the source
pairings would introduce an extra factorial multiplicity.
Endpoint-supported lattice statistics #
The common, pairing-independent canonical torus-grid carrier.
Equations
- Anderson4D.primitiveCanonicalGrid ε n = Fintype.piFinset fun (x : Fin (2 * n)) => Anderson4D.torusGrid (Anderson4D.compatibleMeshSize ε)
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Equations
- Anderson4D.primitiveEndpointSupport_decidable hn δ R z w y = Classical.propDecidable (Anderson4D.primitiveEndpointSupport hn δ R z w y)
Sum of all compatible primitive across pairings on one lattice tuple, with the two continuum endpoints kept in their cell neighbourhoods.
Equations
- One or more equations did not get rendered due to their size.
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Endpoint-supported version of the lattice sum in paper (5.5).
Equations
- Anderson4D.primitiveEndpointSupportedLatticeSum M n hn A δ R z w = Anderson4D.latticeChainSum M (2 * n) (Anderson4D.primitiveEndpointSupportedStatistic hn A δ R z w)
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Elementary transport through one periodic cut #
Aggregate primitive pairings before the box enlargement #
For one cut and one lower-half set, the sum over primitive across pairings is bounded by the endpoint-supported statistic of the lifted tuple. Primitivity is retained and no complete-pairing enlargement is performed here.
Correct fixed-cut bridge. The source primitive pairings first inject
into the all-cuts across carrier. Only after this aggregation is the cut
lift enlarged to the common [-2q,2q] lattice box, incurring the uniform
3^(8n) fiber loss exactly once.
The cut average after summing all primitive pairings #
The endpoint-filtered reduction statistic from PeriodicQuotient,
summed over primitive pairings, is exactly the real periodic endpoint sum
used below.
ENNReal form of
sum_r51PeriodicReductionFilteredRealSum_endpoint_eq, suited to the
Tonelli bound for the primitive kernel.
The arithmetic-geometric cut average commutes with the complete primitive-pairing sum.
The cut count cancels the averaging denominator after the fixed-cut endpoint-preserving lattice bridge.
Regroup the supported lattice sum by its two endpoints #
Continuum endpoint support written directly on a pair of lattice labels.
Equations
- Anderson4D.primitiveEndpointPairSupported δ R z w p = (z ∈ Anderson4D.latticeCellNeighborhood δ R p.1 ∧ w ∈ Anderson4D.latticeCellNeighborhood δ R p.2)
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Equations
Uniformly many endpoint labels on one periodic mesh #
Period-translation code used by nearestPeriodTranslate.
Equations
- Anderson4D.primitiveEndpointPeriodCode q x a i = round (↑((x - a) i) / ↑q)
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The bounded set of period translates which can be nearest to a point
of [-2q,2q]⁴ when the canonical anchor lies in [-q,q]⁴.
Equations
- Anderson4D.primitiveEndpointPeriodCenters q δ z = Finset.image (fun (k : Anderson4D.Z4) => Anderson4D.translateCellIndex (↑q) k (Anderson4D.torusFloorCell δ z)) (Anderson4D.latticeBallNat 0 4)
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Uniform endpoint-label cover; the radius is the support radius plus the one-cell error of the canonical floor anchor.
Equations
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The two endpoint labels range over a uniformly bounded product cover, independently of the period count.
Final geometric estimate for the endpoint bracket sum.
Exact endpoint-fiber decomposition of the supported lattice sum.
The endpoint-independent coefficient supplied by the final Hepp-tree assembly.
Equations
- One or more equations did not get rendered due to their size.
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Apply the fixed-endpoint tree estimate after the exact endpoint-fiber decomposition.
Sum over the 2^(2n) lower-half choices without reintroducing any
pairing multiplicity.
Complete endpoint-preserving R-51 estimate at the periodic real-sum level. All losses are explicit and the global inserted decay remains visible.
Named right-hand side of the endpoint-preserving periodic R-51 estimate. Naming it keeps the continuum and coupling ledgers independent of the (already closed) Hepp-tree expression.
Equations
- One or more equations did not get rendered due to their size.
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Return to the continuum primitive integrals #
Sum the cellwise Tonelli estimate over the complete primitive pairing carrier before applying the endpoint-preserving periodic bound. In particular, this theorem does not pay a copy of the all-pairings lattice estimate for each source pairing.
Complete inserted R-51 bound at the continuum-integrand level, with all covariance, cell, periodic-cut, endpoint, and Hepp-tree factors kept explicit.
The absolute value of the Bochner sum defining the inserted primitive
kernel is controlled by the same summed lintegral. This uses only the
universal norm bound for the Bochner integral; no sign, integrability, or
separate measurability assumption is hidden here.
Explicit all-factor inserted-kernel estimate obtained by composing the Bochner norm inequality with the completed endpoint-preserving R-51 reduction.
Recovering the non-inserted kernel #
The insertion dominates the squared separation of the two fixed endpoints, pointwise in every internal-variable assignment.
Summed lintegral form of the endpoint-insertion comparison.
Bochner norm bound for the non-inserted primitive kernel.
The ordinary kernel is reduced to the inserted Tonelli sum after multiplication by its endpoint factor.