> Full-text translation from Chinese. The original remains authoritative for its research claims; this translation is not independent mathematical verification.

# SRBRD-20
## Goldbach-Shift Uniform Convolution / Low–High Row Split
### Maynard-II Fixed-Residue Dependency, Maynard-III Uniform Type-II Coverage, Balanced-Residue Embedding, and Minimal Missing Lemma

**Parent program:** RG-SCP / Reverse Goldbach Structural Closure Program  
**Branch:** SRBRD — Symmetric Root-Bounded Relation Domain  
**Round:** SRBRD-20  
**Date:** 2026-09-30  
**Version:** v0.1  
**Authors:** Neo.K; Aletheia (GPT-5.6 Sol)  
**Nature:** Proof-Dependency Audit / Low–High Row Analytic Split / Minimal Missing-Theorem Extraction  
**Prerequisites:** SRBRD-00 through SRBRD-19  
**Status:** Substantially narrows the external analytic gap: high-row residue uniformity and prime-coefficient compatibility already have Maynard-III-type theorems; the main unclosed region is concentrated in low-row Goldbach-shift uniformization and sieve-weight factorization / constant strength; Goldbach remains unproved

---

# 0. Purpose of This Round

SRBRD-19 wrote the external-provider requirements for switched semiprime rows along five axes:

$$
\boxed{
C+U+W+P+B
}
$$

where:

- $C$: convolution;
- $U$: growing Goldbach residue uniformity;
- $W$: well-factorable / sieve-weight compatibility;
- $P$: prime first-factor support;
- $B$: the full row band:
  $$
  X^{1/3}<R\le X^{1/2}.
  $$

The preliminary conclusion of SRBRD-19 was:

> Yang 2026 supplies the closest $C+W$;
> Maynard-III supplies $U$;
> but the intersection is missing.

After further auditing the technical propositions of Maynard-II / Maynard-III, SRBRD-20

obtains a more precise and more optimistic band structure:

$$
\boxed{
\text{Maynard-III itself already directly supplies uniform-residue convolution estimates,
and the prime indicator can directly enter the coefficient class.}
}
$$

Therefore:

> Uniform residue + convolution is not missing throughout the entire row band.

The actual remaining hard gap can be compressed into the narrower:

# Low-Row Goldbach-Shift Uniformization

---

# 1. SRBRD Switched Prime-Product Row

Retain:

$$
X=2m-3.
$$

For a semiprime least factor:

$$
r=X^t,
\qquad
\frac13\le t\le\frac12,
$$

Prime cofactor:

$$
u\asymp X^{1-t}.
$$

Core convolution:

$$
\boxed{
r\,u
\equiv
2m
\pmod q.
}
$$

Both variables are prime.

Thus, a dyadic row block has:

$$
\boxed{
\alpha_r
=
\mathbf1_{\mathbb P}(r),
}
$$

$$
\boxed{
\beta_u
=
\mathbf1_{\mathbb P}(u).
}
$$

---

# 2. Prime Indicator Satisfies Maynard-III Siegel–Walfisz Condition

Maynard-III Definition 1 defines a Siegel–Walfisz condition for coefficient sequences,

and explicitly states that:

$$
\boxed{
\alpha_n=\mathbf1_{\mathbb P}(n)
}
$$

satisfies that condition.

Therefore:

## Theorem-Match SRBRD-20-M01

For the Maynard-III Type-II propositions,

one can legitimately take:

$$
\boxed{
\alpha_n
=
\mathbf1_{\mathbb P}(n)
}
$$

and:

$$
\boxed{
\beta_m
=
\mathbf1_{\mathbb P}(m),
}
$$

Since:

- $\alpha$ is Siegel–Walfisz;
- $\alpha,\beta$ are both $1$-bounded;
- they therefore also satisfy the divisor-bounded coefficient condition.

Thus:

$$
\boxed{
P\text{ is not a main obstacle in the Maynard-III convolution propositions.}
}
$$

---

# 3. Maynard-III Proposition 5.1

Maynard-III Proposition 5.1 is a genuine bilinear convolution estimate:

$$
\sum_{q\sim Q}
\sum_{s\sim S}
\sup_{(a,qs)=1}
\left|
\sum_{n\sim N}
\alpha_n
\sum_{v\sim M}
\beta_v
\left(
\mathbf1_{nv\equiv a\pmod{qs}}
-
\frac{
\mathbf1_{(nv,qs)=1}
}{
\varphi(qs)
}
\right)
\right|.
$$

Its key feature:

$$
\boxed{
\sup_a
}
$$

appears directly in the estimate.

Thus:

$$
\boxed{
\text{the residue is fully uniform}.
}
$$

---

# 4. Middle-High Row Coverage

The Maynard-III paper explicitly states:

when the modulus factor:

$$
S\approx X^{1/10},
$$

and:

$$
\delta
$$

small，

Proposition 5.1 covers arbitrary convolutions with one factor：

$$
\boxed{
N
\in
\left[
X^{2/5+\varepsilon},
X^{1/2-\varepsilon}
\right].
}
$$

Thus, for an SRBRD row exponent:

$$
t,
$$

taking:

$$
N=R=X^t,
$$

we obtain:

## Theorem-Match SRBRD-20-M02

$$
\boxed{
\frac25+\varepsilon
\le t
\le
\frac12-\varepsilon
}
$$

as the range of prime × prime convolution,

its:

- convolution;
- prime coefficients;
- growing residue uniformity;

all match the Maynard-III Type-II architecture directly.

The remaining gate is:

$$
\boxed{
\text{sieve modulus factorization / quantitative level}.
}
$$

---

# 5. Near-$2/5$ Bridge

Maynard-III Proposition 5.2 specifically handles:

$$
N\approx X^{2/5}
$$

as a technical gap.

The paper's example parameters can cover the vicinity of:

$$
\boxed{
N
\in
\left[
X^{2/5-1/2000},
X^{2/5+1/100}
\right]
}
$$

as displayed above.

Thus:

## Theorem-Match SRBRD-20-M03

$$
\boxed{
t\approx2/5
}
$$

is not a uniform-residue gap.

Maynard-III already has a direct bridge.

---

# 6. Balanced Row

Maynard-III itself explicitly states:

Propositions 5.1 and 5.2 cannot handle:

$$
\boxed{
N,M\approx X^{1/2}
}
$$

as balanced convolution.

It therefore introduces Proposition 5.3.

---

# 7. Maynard-III Proposition 5.3 Residue Structure

The residue uniformity of Proposition 5.3 is not a fully independent supremum.

It takes the form:

$$
\boxed{
\sup_{(b,q_1)=1}
\sup_{\substack{
(a,q_1q_2)=1\\
a\equiv b\pmod{q_1}
}}
|\Delta(a,b;q_1,q_2)|.
}
$$

Thus:

> $a$ must be compatible with some $b$ modulo $q_1$.

The paper therefore describes the balanced case as not completely uniform.

---

# 8. Goldbach Shift Automatically Satisfies the Restriction

SRBRD needs only one global integer:

$$
\boxed{
A=2m.
}
$$

For each:

$$
q_1,
$$

Define:

$$
\boxed{
b_A
=
A\bmod q_1.
}
$$

For:

$$
q_1q_2,
$$

Define:

$$
\boxed{
a_A
=
A\bmod q_1q_2.
}
$$

Clearly:

$$
\boxed{
a_A
\equiv
b_A
\pmod{q_1}.
}
$$

---

# 9. Global-Integer Residue Embedding

## Theorem SRBRD-20-T01

If an estimate controls:

$$
\sup_b
\sup_{a\equiv b\pmod{q_1}}
|\Delta(a,b;q_1,q_2)|,
$$

it automatically controls any single global-integer residue:

$$
\boxed{
A\bmod(q_1q_2)
}
$$

while simultaneously taking:

$$
\boxed{
b=A\bmod q_1.
}
$$

The proof is only reduction compatibility.

Thus:

$$
\boxed{
\text{The residue restriction of Maynard-III Proposition 5.3
does not exclude the Goldbach shift }A=2m.
}
$$

---

# 10. Balanced-Row Residue Verdict

Thus, in the balanced band:

$$
t\approx1/2
$$

the actual problem is not:

$$
\boxed{
a=2m
\text{ grows as }X\text{ increases}.
}
$$

For the Goldbach shift,

Maynard-III's restricted uniformity already accommodates this residue family.

The remaining issues are still:

- modulus-factor geometry;
- exact variable ranges;
- sieve weights;
- quantitative constant quality.

---

# 11. Updated Row-Band Map

One can divide:

$$
t\in[1/3,1/2]
$$

into four regions.

| Band | $t$ range | Best audited template | Residue status |
|---|---|---|---|
| A | $1/3$ to below $2/5$ | Maynard-II Prop. 5.1 | fixed-$a$ only |
| B | near $2/5$ | Maynard-III Prop. 5.2 | uniform |
| C | $2/5+\varepsilon$ to $1/2-\varepsilon$ | Maynard-III Prop. 5.1 | fully uniform |
| D | balanced near $1/2$ | Maynard-III Prop. 5.3 | restricted uniform, **Goldbach-compatible** |

Thus:

$$
\boxed{
\text{The genuinely evident residue-uniformity hole is now concentrated in Band A.}
}
$$

---

# 12. Maynard-II Proposition 5.1 Fits the Low Variable Range

Maynard-II Proposition 5.1:

$$
NM\asymp X,
$$

and:

$$
\boxed{
X^\varepsilon
\le
N
\le
X^{2/5}.
}
$$

Modulus weight:

$$
\lambda_q
$$

is triply well-factorable,

with level:

$$
\boxed{
Q
\le
X^{3/5-10\varepsilon}.
}
$$

Thus, for:

$$
\boxed{
N=R=X^t,
\qquad
1/3\le t\le2/5,
}
$$

the variable range matches exactly and completely.

---

# 13. Maynard-II Coefficient Class

Proposition 5.1 requires:

- $\alpha_n,\beta_m$ divisor-bounded;
- $\alpha_n$ satisfies Siegel–Walfisz;
- $\alpha_n$ is supported on:
  $$
  P^-(n)\ge z_0.
  $$

The prime indicator, in:

$$
N\ge X^{1/3}
$$

as its range, automatically has:

$$
P^-(n)=n\gg z_0.
$$

Maynard-III explicitly states that the prime indicator satisfies the same Siegel–Walfisz condition.

Therefore:

## Theorem-Match SRBRD-20-M04

The Maynard-II low-row Type-II coefficient architecture is compatible with:

$$
\boxed{
\alpha=\mathbf1_{\mathbb P},
\qquad
\beta=\mathbf1_{\mathbb P}
}
$$

as displayed above.

The actual gap is not coefficient type,

but:

$$
\boxed{
a\text{ fixed}.
}
$$

---

# 14. Fixed-Residue Declaration Is Explicit

Maynard-II §4 notation explicitly declares:

> The residue class $a$ is regarded as a fixed positive integer;
> all implied constants may depend on $a$.

Thus, the theorem takes the form:

$$
\ll_{a,A,\varepsilon}
\frac X{(\log X)^A}.
$$

SRBRD requires:

$$
\boxed{
a=2m=X+3
}
$$

In:

$$
X\to\infty
$$

to grow simultaneously as the scale tends to infinity.

Thus, it cannot be applied directly as a black box.

---

# 15. Fixed $a$ Enters the Proof Core

In the Maynard-II reduction to exponential sums,

$a$ occurs in more than just the congruence indicator.

After Poisson / dispersion reduction, phases of the following form occur:

$$
\boxed{
e
\left(
\frac{
a h n_1
}{
q d r_1
}
\right)
}
$$

and inverse / Kloosterman-type phases at later stages.

Therefore:

$$
\boxed{
\text{uniformizing }a
\text{ is not merely removing the theorem's initial }\ll_a\text{ dependence.}
}
$$

The spectral / exponential-sum stages must be audited.

---

# 16. Three Classes of $a$-Dependence

It is suggested that all:

$$
a
$$

dependencies in the Maynard-II proof be divided into three classes.

## Class I — Coprimality Only

For example:

$$
(q,a)=1.
$$

SRBRD can restrict directly to:

$$
(q,2m)=1.
$$

Since:

$$
p\mid m
$$

has local bad density, in the switched opposite sieve, equal to:

$$
0.
$$

Thus, this kind of dependence is:

$$
\boxed{
\text{harmless / compatible}.
}
$$

---

# 17. Class II — Modular Numerator

For example:

$$
e
\left(
\frac{
a h \bar n
}{q}
\right).
$$

If the underlying Kloosterman / complete-sum bound depends only on:

- the modulus;
- the gcd of numerator and modulus;

then:

$$
(a,q)=1
$$

may already suffice for uniformity.

This kind of dependence is:

$$
\boxed{
\text{potentially removable}.
}
$$

But this must be checked lemma by lemma.

---

# 18. Class III — Genuine Archimedean / Constant Dependence

If some step produces:

$$
|a|^\theta,
$$

or:

$$
C(a)
$$

that cannot be controlled as:

$$
X^{o(1)},
$$

then:

$$
a=X+3
$$

will genuinely destroy the uniform theorem.

This is the:

$$
\boxed{
\text{fatal fixed-residue dependence}.
}
$$

This round has not yet found theorem-level evidence that Class III must occur,

but the published proof allows it to exist,

so its absence cannot be assumed.

---

# 19. Important Audit Observation

In the Maynard-II statements / reductions checked so far:

- $a$ is explicitly fixed;
- coprimality conditions occur extensively;
- exponential-phase numerators occur extensively;
- theorem constants may depend on $a$.

But no explicit:

$$
\boxed{
|a|^c
}
$$

loss has yet been seen in the main bound.

Thus, the currently correct verdict is not:

$$
\boxed{
\text{uniformization impossible}.
}
$$

but:

$$
\boxed{
\text{uniformization unresolved and now line-by-line auditable}.
}
$$

---

# 20. Maynard-III Shows Uniformity Is Technically Achievable

The main feature of Maynard-III is precisely:

$$
\boxed{
\text{complete / near-complete residue uniformity beyond }X^{1/2}.
}
$$

Its technical propositions even directly estimate bilinear convolutions using:

$$
\sup_a
$$

as displayed above.

Thus:

> Fixed-residue dependence is not an unavoidable law of the entire Maynard dispersion architecture.

The actual question is:

$$
\boxed{
\text{In which variable ranges can Maynard-II's stronger well-factorable level and
Maynard-III's uniform-residue technology
be retained simultaneously?}
}
$$

---

# 21. Minimal Missing Lemma

Since SRBRD needs only:

$$
\boxed{
a_X=X+3,
}
$$

and not the full:

$$
\sup_a.
$$

the minimal target should not initially be written as:

> An arbitrary uniform-residue theorem.

Instead, write:

# GSHIFT-TII

---

# 22. Goldbach-Shift Uniform Type-II Lemma — Target Form

The hoped-for statement is:

For:

$$
\boxed{
a_X=X+3,
}
$$

$$
\boxed{
X^{1/3+\eta}
\le
N
\le
X^{2/5-\eta},
}
$$

$$
NM\asymp X,
$$

and compatible well-factorable / upper-sieve modulus weights:

$$
\lambda_q,
$$

we have:

$$
\boxed{
\sum_{\substack{
q\le Q\\
(q,a_X)=1
}}
\lambda_q
\sum_{n\sim N}
\mathbf1_{\mathbb P}(n)
\sum_{v\sim M}
\mathbf1_{\mathbb P}(v)
\left[
\mathbf1_{nv\equiv a_X\pmod q}
-
\frac{
\mathbf1_{(nv,q)=1}
}{
\varphi(q)
}
\right]
\ll_{A,\eta}
\frac X{(\log X)^A}.
}
$$

The implied constant must be:

$$
\boxed{
\text{independent of }X
}
$$

through：

$$
a_X=X+3.
$$

---

# 23. Why GSHIFT-TII Is Strictly Weaker Than Full Uniformity

A full uniform theorem requires:

$$
\sup_{(a,q)=1}
|\Delta(a;q)|.
$$

GSHIFT-TII requires only one deterministic path:

$$
\boxed{
a_X=X+3.
}
$$

Thus:

$$
\boxed{
\text{GSHIFT-TII}
<
\text{full uniform residue Type-II}.
}
$$

This may substantially reduce the technical burden.

---

# 24. Congruence Size Is Not Intrinsic

congruence：

$$
nv\equiv a_X\pmod q
$$

depends only on:

$$
a_X\bmod q.
$$

Thus:

$$
|a_X|\asymp X
$$

need not intrinsically cause a loss.

Only if the proof method produces, for the integer representative:

$$
a_X
$$

nonmodular dependence,

does a uniformity problem arise.

This is the core of the next round's audit.

---

# 25. Goldbach Coprimality Reduction

SRBRD switched local density:

$$
g_m(p)
=
\begin{cases}
0,&p\mid m,\\
1/(p-1),&p\nmid m.
\end{cases}
$$

Thus, the sieve modulus can directly be restricted to:

$$
\boxed{
(q,2m)=1.
}
$$

That is:

$$
\boxed{
(q,a_X)=1.
}
$$

GSHIFT-TII therefore need not handle noncoprime residues.

---

# 26. Balanced Proposition 5.3 as a Goldbach-Specific Uniformity Lesson

Maynard-III Prop 5.3 is not an arbitrary independent-residue theorem,

but the Goldbach shift can still be embedded.

This shows:

$$
\boxed{
\text{We should not seek uniformity stronger than what the Goldbach structure actually needs.}
}
$$

GSHIFT-TII should follow the same philosophy.

---

# 27. Modulus-Factorization Gate

Even once the Type-II residue / coefficient match is complete,

another independent issue remains:

$$
\boxed{
\text{Can SRBRD upper-sieve weights factor into the modulus windows required by Maynard-III?}
}
$$

Maynard-II handles this issue for linear-sieve weights with a very delicate factorization proposition.

The Maynard-III main theorems instead concern:

> Moduli with suitably sized divisors.

Thus, these must be separated:

### Residue Match

Most of this has PASS in this round.

### Sieve-Weight / Modulus Match

Still:

$$
\boxed{
\text{PENDING}.
}
$$

---

# 28. Constant-Strength Gate

The SRBRD-18 warning must also be retained:

Even if a theorem's:

- convolution;
- uniform residue;
- prime coefficients;

all match,

if it gives only:

$$
Q=X^{1/2+\delta}
$$

and the resulting linear-sieve constant is still too large,

it still cannot enter the final positive ledger.

Therefore:

$$
\boxed{
\text{theorem legality}
\neq
\text{constant sufficiency}.
}
$$

SRBRD-20 addresses only theorem-shape localization,

and does not claim crossing.

---

# 29. Revised External-Theorem Map

### Band A

$$
\frac13\le t<\frac25-\eta.
$$

- Maynard-II range: excellent.
- well-factorable level: strong.
- coefficients: compatible.
- residue: fixed-$a$ gap.

Verdict:

$$
\boxed{
\text{GSHIFT uniformization target}.
}
$$

---

# 30. Band B

$$
t\approx\frac25.
$$

Maynard-III Prop 5.2:

- convolution: PASS;
- residue uniformity: PASS;
- prime coefficients: PASS;
- modulus factorization: PENDING.

Verdict:

$$
\boxed{
\text{analytic shape largely available}.
}
$$

---

# 31. Band C

$$
\frac25+\eta
\le t
\le
\frac12-\eta.
$$

Maynard-III Prop 5.1:

- arbitrary convolution;
- full residue supremum;
- prime-coefficient compatibility.

Verdict:

$$
\boxed{
\text{residue + coefficient gap closed}.
}
$$

---

# 32. Band D

$$
t\approx\frac12.
$$

Maynard-III Prop 5.3:

- balanced convolution;
- restricted residue uniformity;
- the global Goldbach residue satisfies the restriction exactly.

Verdict:

$$
\boxed{
\text{Goldbach-residue match PASS},
}
$$

But:

$$
\boxed{
\text{modulus / constant integration pending}.
}
$$

---

# 33. Correction to SRBRD-19

SRBRD-19 stated:

> The missing theorem may require, across the full band,
> Yang-type convolution + Maynard-III uniformity.

SRBRD-20 corrects this to:

$$
\boxed{
\text{full-band uniformity gap was too pessimistic}.
}
$$

The Maynard-III technical propositions already supply uniform bilinear convolution across a substantial middle/high band,

and the balanced restriction also accommodates a single global Goldbach residue.

What is clearly still uncovered is:

$$
\boxed{
\text{low row }t\approx1/3\to2/5
}
$$

as the range requiring uniformization of stronger fixed-residue technology.

---

# 34. Repositioning the Role of Yang 2026

Yang 2026 remains important,

but its role changes from:

> The only possible full-row convolution provider

to:

> **A quantitative enhancement provider for higher levels / better constants.**

Qualitatively:

- convolution;
- prime coefficients;
- residue uniformity;

already have direct templates in the Maynard-III middle/high band.

Yang/Pascadi may still supply:

- a stronger modulus range;
- a better constant;
- high-level well-factorable weights;

to address the SRBRD-18 constant ledger.

---

# 35. Low-Row Proof Dependency Graph

Maynard-II low-row route:

$$
\boxed{
\text{Prop 5.1}
}
$$

is supported by:

$$
\boxed{
\text{Prop 8.2 convolution estimate}
}
$$

as displayed above,

with the proof reduction proceeding through:

1. separation;
2. Poisson;
3. Cauchy–Schwarz;
4. exponential sums;
5. Kloosterman / spectral estimates.

Along this chain, $a$:

- occurs in gcd restrictions;
- occurs in exponential-phase numerators;
- theorem constants may depend on $a$.

Thus, SRBRD-21 can conduct a genuine dependency-by-dependency audit.

---

# 36. Uniformization Classification Table

| Dependency form | Goldbach shift risk | Intended treatment |
|---|---|---|
| $(q,a)=1$ | low | restrict $(q,2m)=1$ |
| $a\bmod q$ | low | modular reduction |
| gcd factors involving $a$ | low/medium | coprimality or divisor bounds |
| $\tau(a)^{O(1)}$ | medium but absorbable | $X^{o(1)}$ |
| $e(a\bar n/q)$ numerator | unknown | audit Kloosterman uniformity |
| $|a|^\theta$ | fatal at present | new estimate needed |
| exceptional modulus depending on $a$ | unknown | isolate / average / exclude |

---

# 37. Acceptable Uniform Loss

GSHIFT-TII need not necessarily have complete:

$$
O(1)
$$

independence in:

$$
a_X.
$$

If the proof causes only:

$$
\boxed{
\tau(a_X)^C
}
$$

or:

$$
(\log a_X)^C,
$$

this can be absorbed by:

$$
\boxed{
X^\varepsilon
}
$$

or by the logarithmic budget.

Thus, what is genuinely fatal is:

$$
\boxed{
a_X^\theta
}
$$

type loss.

---

# 38. Minimal Uniformization Objective

The next round's actual proof objective should be:

$$
\boxed{
C(a_X)
\le
X^{o(1)}
}
$$

for：

$$
a_X=X+3.
$$

If this holds,

the Maynard-II fixed-$a$ estimate may have a chance to be upgraded to:

# Goldbach-Shift Uniform Type-II

without obtaining:

$$
\sup_a.
$$

---

# 39. Prime-First-Factor Gate Is Smaller Than Previously Thought

Maynard-III explicitly states that:

$$
\mathbf1_{\mathbb P}
$$

satisfies SW.

Maynard-II uses the same type of SW condition,

and a prime in a low row automatically satisfies:

$$
P^-(n)\ge z_0.
$$

Thus:

$$
\boxed{
\text{prime first-factor support is no longer a main conceptual gap}.
}
$$

What actually remains:

- low-row $a_X$ uniformity;
- weight factorization;
- constants.

---

# 40. High-Row Balanced Cap May Be Thin Anyway

Even if Prop 5.3 integration is not ideal,

Maynard-III Prop 5.1 can push the upper endpoint to:

$$
X^{1/2-\varepsilon}
$$

for an arbitrarily small fixed:

$$
\varepsilon.
$$

Thus, the genuinely balanced cap can be narrowed to:

$$
\boxed{
t\in
[1/2-\varepsilon,1/2].
}
$$

Its continuum width:

$$
\varepsilon.
$$

One can therefore also consider:

- a trivial upper bound;
- Brun–Titchmarsh;
- transport-heavy treatment;

without requiring a full balanced theorem.

This supplies a backup route.

---

# 41. Low-Row Cannot Be Made Thin in the Same Way

The low gap:

$$
[1/3,2/5]
$$

has fixed width:

$$
\boxed{
\frac25-\frac13
=
\frac1{15}.
}
$$

Thus, it cannot, like the balanced cap, be removed merely by:

$$
\varepsilon
$$

as a shrinking parameter.

It is a band that genuinely needs an analytic theorem.

---

# 42. New Minimal Architecture

The SRBRD analytic providers can be replanned:

## Low

$$
t\in[1/3,2/5].
$$

Target:

$$
\boxed{
\text{GSHIFT-TII uniformized Maynard-II}
}
$$

or an equivalent new lemma.

## Middle

$$
t\approx2/5.
$$

Maynard-III Prop 5.2.

## High

$$
t\in[2/5+\eta,1/2-\eta].
$$

Maynard-III Prop 5.1.

## Balanced Cap

Prop 5.3 or explicit small-cap treatment.

---

# 43. Theorem Strength vs Ledger Strength

This split states only:

$$
\boxed{
\text{distribution error can be controlled}.
}
$$

The final ledger must still ask:

> How large an upper-sieve multiplier does the corresponding level / sieve weight produce?

Therefore:

$$
\boxed{
\text{Band Coverage Pass}
}
$$

and:

$$
\boxed{
\text{Constant Crossing Pass}
}
$$

must be separated into two gates.

---

# 44. Formal Target — GSHIFT-TII v0.1

```yaml
GSHIFT_TII:

  global_scale:
    X:
      large: true

  residue:
    a_X:
      X + 3

  factor_range:
    N:
      X^(1/3+eta)
      to:
      X^(2/5-eta)

    M:
      asymptotic:
        X/N

  coefficients:
    alpha_n:
      prime_indicator: true

    beta_m:
      prime_indicator: true

  modulus:
    coprime_to_a_X: true

  weight:
    target:
      triply_well_factorable_or_linear_upper_variant: true

  estimate:
    uniform_in_X_through_a_X: true
    error:
      X/log(X)^A
```

---

# 45. Goldbach-Shift Residue Lemma

GSHIFT-TII can first be decomposed further into:

## GSHIFT-Phase Lemma

All occurrences of the following in the Maynard-II reductions:

$$
a
$$

Take:

$$
a=X+3
$$

after this substitution,

the relevant complete / incomplete exponential-sum bounds retain:

$$
\boxed{
X^{o(1)}
}
$$

as their uniformity.

If this step holds,

most of the remaining combinatorial factorization need not be changed.

---

# 46. Possible Easy Outcome

If a proof-by-proof audit finds:

> All $a$ dependence actually enters only through:
> - gcd;
> - reduced residues;
> - the divisor function;
> - root-of-unity phases;

then GSHIFT uniformity may only be a case of:

$$
\boxed{
\text{constants not tracked in the published theorem,
rather than a genuinely new obstruction}.
}
$$

This is the possibility most worth checking first in the next round.

---

# 47. Possible Hard Outcome

If the Deshouillers–Iwaniec / Kuznetsov stage, as:

$$
a
$$

grows, produces:

$$
|a|^\theta
$$

or conductor-scale loss,

then:

$$
\boxed{
\text{GSHIFT-TII is a genuinely new analytic theorem}.
}
$$

Then consider:

- Maynard-III algebraic-uniform methods;
- Yang/Pascadi convolution;
- a dispersion reformulation.

---

# 48. Research Integrity Firewall

Until SRBRD-21 is completed,

one must not write:

$$
\boxed{
\text{Maynard-II can be used with }a=2m.
}
$$

The only correct wording is:

$$
\boxed{
\text{variable ranges / coefficients match;
uniformity remains unverified}.
}
$$

---

# 49. External Source Audit Summary

### Maynard-II

The paper explicitly states:

$$
\boxed{
a\text{ fixed},
}
$$

Constants may depend on:

$$
a.
$$

Prop 5.1 exactly covers:

$$
N\le X^{2/5}.
$$

### Maynard-III

The paper's main feature:

$$
\boxed{
\text{uniform residue classes}.
}
$$

Definition 1 explicitly states that the prime indicator satisfies SW.

Props 5.1–5.2:

$$
\boxed{
\text{uniform arbitrary convolutions around }2/5\text{ to }1/2.
}
$$

Prop 5.3：

balanced convolution with residue compatibility,

into which the Goldbach shift can be embedded.

---

# 50. Current Exact Gap

Thus, as of:

$$
\boxed{
2026\mbox{-}09\mbox{-}30
}
$$

the SRBRD row analytic gap can be rewritten as:

$$
\boxed{
\text{LOW ROW}
:
\text{fixed-residue stronger Type-II}
\to
\text{Goldbach-shift uniform Type-II}
}
$$

together with:

$$
\boxed{
\text{ALL BANDS}
:
\text{sieve-weight factorization + constant sufficiency}.
}
$$

This is more precise than the full-band missing theorem of SRBRD-19.

---

# 51. Formal Theorem Queue

```yaml
SRBRD_20:

  T01:
    global_integer_residue_embeds_in_MaynardIII_balanced_restriction

  Match01:
    prime_indicator_is_MaynardIII_SW_compatible

  Match02:
    middle_high_row_uniform_convolution_available

  Match03:
    near_two_fifths_uniform_bridge_available

  Match04:
    MaynardII_low_row_variable_and_coefficient_match

  Gap01:
    MaynardII_growing_Goldbach_shift_uniformity_unverified

  Gap02:
    sieve_weight_modulus_factorization_unclosed

  Gap03:
    constant_ledger_still_unclosed
```

---

# 52. Acceptance Gate

Before SRBRD-20 is formalized, the following are needed:

1. the Maynard-III SW prime-indicator citation;
2. checking the Prop 5.1 range;
3. checking the Prop 5.2 near-$2/5$ range;
4. checking the Prop 5.3 restricted residues;
5. the global-integer embedding proof;
6. checking the Maynard-II Prop 5.1 low range;
7. checking the fixed-$a$ declaration;
8. checking the exponential-phase occurrence;
9. marking uniformization as unresolved;
10. an independent modulus-factorization gate;
11. theorem coverage not equated with constant crossing;
12. no Goldbach proof claim.

---

# 53. Verdict

This round can give:

$$
\boxed{
\mathrm{SRBRD\mbox{-}20\ LOW\mbox{-}ROW\ GAP\ LOCALIZATION\ PASS}.
}
$$

The largest correction:

$$
\boxed{
\text{Maynard-III already directly covers a substantial middle/high convolution range,
and the Goldbach residue can be embedded in the balanced restricted-uniform proposition.}
}
$$

Thus:

$$
\boxed{
\text{uniform convolution is not an unknown problem throughout the full row band.}
}
$$

The genuinely cleanest analytic target has narrowed to:

$$
\boxed{
\text{Goldbach-Shift Uniformization of Maynard-II Low-Row Type-II}.
}
$$

However:

$$
\boxed{
\mathrm{GSHIFT\mbox{-}TII\ NOT\ YET\ PROVED}.
}
$$

$$
\boxed{
\mathrm{CONSTANT\ CROSSING\ NOT\ YET\ PROVED}.
}
$$

and:

$$
\boxed{
\mathrm{GOLDBACH\ STILL\ OPEN}.
}
$$

---

# 54. Suggestion for the Next Round

# SRBRD-21
## Fixed-$a$ Spectral Dependency / Goldbach-Shift Uniformization Audit

The next round does only one thing:

Trace step by step, in Maynard-II:

$$
\text{Prop 5.1}
\leftarrow
\text{Prop 8.2}
\leftarrow
\text{exponential-sum reductions}
$$

every:

$$
a
$$

dependency.

Classify each occurrence:

```yaml
a_dependency:
  gcd_only:
    harmless

  residue_only:
    harmless

  divisor_function:
    absorbable_if_X_o_1

  Kloosterman_numerator:
    inspect_uniformity

  spectral_conductor:
    inspect_uniformity

  polynomial_absolute_size:
    fatal_without_new_bound
```

The final target:

$$
\boxed{
C(a_X)
\le
X^{o(1)}
\qquad
a_X=X+3.
}
$$

If this holds:

$$
\boxed{
\text{GSHIFT-TII upgrade candidate}.
}
$$

If it does not,

precisely locate the lemma that must be replaced by Maynard-III / Yang / Pascadi technology,

rather than redesigning the entire SRBRD again.

---

# Appendix A: Updated Row-Band Ledger

```yaml
row_band:

  low:
    t:
      1/3_to_2/5
    template:
      Maynard_II_Prop5_1
    variable_match:
      PASS
    prime_coefficients:
      PASS_LIKE
    residue:
      FIXED_A_GAP
    status:
      MAIN_ANALYTIC_TARGET

  near_two_fifths:
    template:
      Maynard_III_Prop5_2
    residue:
      UNIFORM
    prime_coefficients:
      PASS
    status:
      SHAPE_PASS

  middle_high:
    t:
      2/5_plus_to_1/2_minus
    template:
      Maynard_III_Prop5_1
    residue:
      UNIFORM
    prime_coefficients:
      PASS
    status:
      SHAPE_PASS

  balanced:
    t:
      near_1/2
    template:
      Maynard_III_Prop5_3
    residue:
      RESTRICTED_UNIFORM
    Goldbach_global_integer:
      compatible: true
    status:
      RESIDUE_PASS_WEIGHT_GATE_PENDING
```

---

# Appendix B: Maynard-II Fixed-$a$ Dependency

```yaml
paper:
  Primes_in_AP_large_moduli_II

notation:
  a:
    fixed_positive_integer: true

implied_constants:
  may_depend_on_a: true

low_TypeII:
  N_range:
    X^epsilon_to_X^(2/5)

reduction:
  exponential_phase_contains_a: true

SRBRD:
  a_X:
    X+3
  grows_with_X: true

conclusion:
  direct_black_box_use:
    false
```

---

# Appendix C: Maynard-III Uniformity Facts

```yaml
SiegelWalfisz_examples:
  prime_indicator:
    satisfies: true

Prop5_1:
  convolution:
    arbitrary_divisor_bounded: true
  residue:
    supremum_uniform: true
  useful_N_range:
    approx_2/5_plus_to_1/2_minus

Prop5_2:
  near_2/5:
    true
  residue:
    supremum_uniform: true

Prop5_3:
  balanced:
    true
  residue:
    a_congruent_b_mod_q1

Goldbach_shift:
  choose:
    b:
      A_mod_q1
    a:
      A_mod_q1q2
  compatibility:
    automatic: true
```

---

# Appendix D: GSHIFT-TII Target

```yaml
name:
  GoldbachShift_Uniform_TypeII

residue:
  a_X:
    X+3

range:
  low_factor:
    X^(1/3+eta)
    to:
    X^(2/5-eta)

coefficients:
  prime_times_prime: true

uniformity:
  implied_constant_independent_of_X_through_a_X: true

acceptable_losses:
  polylog_a: true
  divisor_a_power: true_if_absorbable_X_o_1
  absolute_a_positive_power: false

status:
  open_target
```

---

# Appendix E: Correction to SRBRD-19

```yaml
old_view:
  full_row_missing:
    Yang_convolution_plus_MaynardIII_uniformity

new_view:
  middle_high_uniform_convolution:
    already_present_in_MaynardIII: true

  balanced_global_Goldbach_residue:
    embeds_in_restricted_uniformity: true

  clearest_uniformity_gap:
    low_row_MaynardII_fixed_a: true

  Yang_role:
    higher_level_and_constant_enhancement: true
    sole_full_row_shape_provider: false
```

---

# Appendix F: Commit Decision

```yaml
research_round: SRBRD-20

decision:
  middle_high_uniformity_gap_reduced: true
  balanced_Goldbach_residue_embedding: true
  prime_coefficient_compatibility: true
  low_row_GSHIFT_target_identified: true
  low_row_uniformization_proved: false
  modulus_factorization_closed: false
  constant_crossing: false
  goldbach_proved: false

next:
  SRBRD-21_FixedA_SpectralDependency_GoldbachShift_Uniformization_Audit
```

---

# References / Audited Sources

1. James Maynard, **Primes in arithmetic progressions to large moduli II: Well-factorable estimates**, *Memoirs of the American Mathematical Society* 306 (2025), no. 1543; arXiv:2006.07088.

   Key audited facts:
   - §4 fixes $a$ and allows implied constants to depend on $a$.
   - Proposition 5.1 covers $X^\varepsilon\le N\le X^{2/5}$.
   - Proposition 5.1 uses a bilinear convolution with well-factorable modulus weights.
   - the exponential-sum reduction retains $a$ in Fourier/Kloosterman-type phases.

2. James Maynard, **Primes in arithmetic progressions to large moduli III: Uniform residue classes**, *Memoirs of the American Mathematical Society* 306 (2025), no. 1544; arXiv:2006.08250.

   Key audited facts:
   - Definition 1 explicitly states the prime indicator satisfies the Siegel–Walfisz condition.
   - Proposition 5.1 gives uniform-residue Type-II convolution estimates over a broad middle/high factor range.
   - Proposition 5.2 extends the range near $X^{2/5}$.
   - Proposition 5.3 treats balanced convolutions under a residue-compatibility condition.
   - the paper explicitly notes that completely uniform balanced convolution is harder.

3. Zhiyuan Yang, **Convolution-type Bombieri-Vinogradov theorem with well-factorable Weights, and its applications**, arXiv:2608.13299v2 (2026-09-03).

   Current role after SRBRD-20:
   - stronger convolution / modulus-level technology;
   - potential constant improvement;
   - no longer treated as the only possible qualitative high-row convolution template.

4. Alexandru Pascadi, **On the exponents of distribution of primes and smooth numbers**, arXiv:2505.00653 (2025).

   Used as a higher-level structured-weight technology source for future constant optimization, not as a direct SRBRD provider in this round.
