The occurrence ledger in the single-scale estimate #
This file isolates the phase-independent bookkeeping used immediately after
(5.88). The statistic paperNXSkippedOccurrenceCount O x a is the literal
paper statistic: it counts skipped adjacency indices whose right endpoint
has (N,X) class a. It therefore depends only on the class word and the
omitted-edge set, not on a summation phase, parity choice, or anchor.
The main results are:
- the pointwise ledger
s_{N,X} ≤ m_{N,X}; - the exact global ledger
∑ s_{N,X} = |O|; - an exact regrouping of the two occurrence factors in (5.88) by
(N,X); - the resulting factorial bound (5.89);
- an exact count of the labeled-copy choices in an anchor fiber.
The right-endpoint convention here is intentionally distinct from the orientation-dependent incoming-edge convention used by an outward summation schedule. No class-by-class identification of those two conventions is asserted.
The literal right-endpoint occurrence statistic #
Number of positions of an active (N,X) word which have underlying
class a.
Equations
- Anderson4D.nxWordOccurrenceCount x a = {i : Fin m | ↑(x i) = a}.card
Instances For
Paper's s_{N,X} below (5.88): skipped adjacencies classified by the
class of their right endpoint j+1.
Equations
- Anderson4D.paperNXSkippedOccurrenceCount O x a = {j ∈ O | ↑(x (Anderson4D.adjacentSucc j)) = a}.card
Instances For
The successor map on adjacency indices is injective.
Occurrence count for an arbitrary assignment of each skipped adjacency to
one word position. The outward elimination will instantiate q by the
endpoint farther from the anchor.
Equations
- Anderson4D.assignedNXSkippedOccurrenceCount q O x a = {j ∈ O | ↑(x (q j)) = a}.card
Instances For
An injective edge-to-position assignment cannot charge a class more often than that class occurs in the full word.
A valid active class word contains m_{N,X} occurrences of every
active class.
Every skipped right-endpoint occurrence is an occurrence of the same class in the whole word.
The pointwise occurrence ledger used by factorial absorption:
s_{N,X} ≤ m_{N,X}.
The generic assigned occurrence ledger satisfies
s_{N,X} ≤ m_{N,X} whenever the edge-to-position assignment is injective.
Exact global occurrence ledger: every omitted adjacency contributes once, to the class of its right endpoint.
Every skipped edge contributes once for any assigned-position convention; injectivity is not needed for this total ledger.
Exact regrouping of the occurrence factors in (5.88) #
The phase-independent factor X Y^(1/2) contributed by one occurrence
of an (N,X) class in (5.88).
Equations
- Anderson4D.paper588OccurrenceAtom Nm mu a = ↑a.2 * √↑(Anderson4D.singleScaleSigma2 Nm mu a).2
Instances For
The factor (XY)^(-1/2) contributed when an adjacency is omitted.
Equations
- Anderson4D.paper588SkippedAtom Nm mu a = (√↑(a.2 * (Anderson4D.singleScaleSigma2 Nm mu a).2))⁻¹
Instances For
The two common occurrence products on the left of the per-fiber factorial comparison following (5.88).
Equations
- One or more equations did not get rendered due to their size.
Instances For
Regroup an arbitrary position product by the underlying active
(N,X) class.
Regroup an arbitrary skipped-edge product by the right-endpoint class.
Regroup a skipped-edge product for an arbitrary assigned-position convention.
Occurrence factor with a caller-specified assignment of skipped edges to word positions.
Equations
- Anderson4D.assigned588WordOccurrenceFactor Nm mu q O x = (∏ i : Fin m, Anderson4D.paper588OccurrenceAtom Nm mu ↑(x i)) * ∏ j ∈ O, Anderson4D.paper588SkippedAtom Nm mu ↑(x (q j))
Instances For
Exact (N,X) regrouping for an assigned skipped-edge convention.
Generic factorial absorption for any injective skipped-edge assignment.
Exact (N,X)-fiber regrouping of the occurrence part of (5.88).
The phase-independent occurrence/factorial ledger: the literal common factor in (5.88) is bounded by the factorial expression in (5.89).
The independent anchor-copy counting cost #
The phase-independent outward occurrence ledger #
Skipped occurrences charged to the unique endpoint farther from the anchor, exactly as in the outward kernel schedule.
Equations
Instances For
Equations
- Anderson4D.XYCluster.outward588WordOccurrenceFactor Nm mu anchor O x = Anderson4D.assigned588WordOccurrenceFactor Nm mu (Anderson4D.XYCluster.outwardEdgeTargetPosition anchor) O x
Instances For
The occurrence factor actually produced by the anchored outward schedule obeys the same factorial estimate as the paper's right-endpoint factor.
A full (N,X) fiber contains exactly m_{N,X} labeled copies.
Deleting already exposed copies can only reduce the cardinality of a
fiber, so every conditioned choice set has size at most m_{N,X}.
With no previously used copies, conditioning leaves the full fiber.
Exact count for the independent choice of the copy at an anchor position.
A uniformly bounded summand over the independent anchor-copy choices costs at most the exact anchor multiplicity.
The number of possible anchor copies never exceeds the total number of labeled copies.