# TCDC-17
## Bad-Mass Simplex / Semiprime-Marginal Upper Constant Closure
### Exact Bad-Mass Geometry、Provider-Loss Budget、Fixed-Row Semiprime Upper No-Go、Aggregate Level-Lift Target 與 Coupled-Discount Requirement

**母方法論：** TCDC — Target–Condition Dual Closure  
**對接研究線：** RG-SCP / SRBRD  
**輪次：** TCDC-17  
**日期：** 2026-10-02  
**版本：** v0.1  
**作者：** Neo.K；Aletheia（GPT-5.6 Sol）  
**性質：** Bad-Mass Simplex / Upper-Sieve Constant Audit / Provider-Loss Geometry  
**前置：** TCDC-00 ～ TCDC-16；SRBRD-00 ～ SRBRD-26  
**狀態：** 將 exact identity $M_{PP}=S_m-n_{SP}-M_{PS}$ 正規化成二維 bad-mass simplex；建立 neutral-lower loss、semiprime-upper loss、mixed-upper loss共享的 provider budget；證明在 rank-one Buchstab benchmark下，standard fixed-row linear upper即使給予整個 row-scale 的最佳 distribution level，semiprime marginal multiplier仍約 $2.043896$，與 ideal mixed upper相加仍超出 simplex；因此 semiprime marginal必須使用 aggregate convolution / switching 或 coupled bad-mass discount；未證明 uniform positive simplex gap；Goldbach仍未證明

---

# 0. 本輪目標

TCDC-16 exact：

$$
\boxed{
M_{PP}
=
S_m
-
n_{SP}
-
M_{PS}.
}
$$

這一式把 Goldbach target改寫成：

# Neutral Mass − Bad Mass

其中 bad mass有兩類：

1. semiprime left marginal：
   $$
   n_{SP};
   $$
2. mixed prime-semiprime branch：
   $$
   M_{PS}.
   $$

TCDC-17 要做：

> 把這三個量放進同一 normalization，
> 研究各種 proof providers 可以容許多少 constant loss。

---

# 1. Exact Bad-Mass Coordinates

定義：

$$
\boxed{
a_m
=
\frac{
n_{SP}
}{
S_m
},
}
$$

$$
\boxed{
b_m
=
\frac{
M_{PS}
}{
S_m
}.
}
$$

因：

$$
S_m
=
n_0+n_{SP},
$$

有：

$$
\boxed{
\frac{
n_0
}{
S_m
}
=
1-a_m.
}
$$

---

# 2. Exact Matrix in $(a,b)$ Coordinates

由：

$$
n_{SP}
=
M_{PS}+M_{SS},
$$

得到：

$$
\boxed{
\frac{
M_{SS}
}{
S_m
}
=
a_m-b_m.
}
$$

由 TCDC-16 bad-mass identity：

$$
\boxed{
\frac{
M_{PP}
}{
S_m
}
=
1-a_m-b_m.
}
$$

所以：

## Theorem TCDC-17-T01

$$
\boxed{
\frac1{S_m}
\begin{pmatrix}
M_{PP}&M_{PS}\\
M_{PS}&M_{SS}
\end{pmatrix}
=
\begin{pmatrix}
1-a-b&b\\
b&a-b
\end{pmatrix}.
}
$$

---

# 3. Feasible Bad-Mass Simplex

matrix entries nonnegative要求：

$$
b\ge0,
$$

$$
a-b\ge0,
$$

$$
1-a-b\ge0.
$$

因此：

## Theorem TCDC-17-T02
### Bad-Mass Simplex

$$
\boxed{
0\le b\le a,
\qquad
a+b\le1.
}
$$

所以所有 exact joint transport都落在：

$$
(a,b)
$$

plane 的 triangular feasible region。

---

# 4. Goldbach Failure Face

$$
M_{PP}=0
$$

iff：

$$
1-a-b=0.
$$

因此：

## Theorem TCDC-17-T03

Goldbach failure正是 bad-mass simplex的斜邊：

$$
\boxed{
a+b=1.
}
$$

且因：

$$
b\le a,
$$

failure edge滿足：

$$
\boxed{
a\ge1/2.
}
$$

---

# 5. Failure-Line Distance

exact good mass：

## Theorem TCDC-17-T04

$$
\boxed{
d_{\mathrm{bad}}
=
1-a_m-b_m
=
\frac{
M_{PP}
}{
S_m
}.
}
$$

所以 ordered Goldbach density就是：

# Bad-Mass Point 到 Failure Face 的 Linear Slack

---

# 6. Buchstab Rank-One Benchmark Point

TCDC-14：

$$
\boxed{
p_*
=
\frac1{1+\log2},
}
$$

$$
\boxed{
s_*
=
\frac{\log2}{1+\log2}.
}
$$

rank-one benchmark：

$$
\boxed{
a_*=s_*,
}
$$

$$
\boxed{
b_*=p_*s_*.
}
$$

numerically：

$$
\boxed{
a_*
\approx
0.409383890850,
}
$$

$$
\boxed{
b_*
\approx
0.241788720763.
}
$$

---

# 7. Benchmark Distance to Failure

T04：

$$
1-a_*-b_*
=
1-s_*-p_*s_*.
$$

因：

$$
p_*+s_*=1,
$$

得到：

## Theorem TCDC-17-T05

$$
\boxed{
1-a_*-b_*
=
p_*^2.
}
$$

numerically：

$$
\boxed{
p_*^2
\approx
0.348827388387.
}
$$

所以：

$$
\boxed{
0.348827\ldots
}
$$

就是 benchmark point到 failure face的 exact bad-mass slack。

---

# 8. Common Main-Scale Normalization

令：

$$
\boxed{
\mathfrak M_m>0
}
$$

為某 proof / asymptotic common neutral scale。

假設：

$$
\boxed{
S_m
\ge
\alpha
\mathfrak M_m,
}
$$

$$
\boxed{
n_{SP}
\le
\kappa_{SP}
s_*
\mathfrak M_m,
}
$$

$$
\boxed{
M_{PS}
\le
\kappa_{PS}
p_*s_*
\mathfrak M_m.
}
$$

其中：

- $\alpha$：
  neutral lower efficiency；
- $\kappa_{SP}$：
  semiprime marginal upper multiplier；
- $\kappa_{PS}$：
  mixed upper multiplier。

---

# 9. Separate-Provider Simplex Gate

TCDC-16：

$$
M_{PP}
\ge
L_S-U_{SP}-U_{PS}.
$$

所以：

## Theorem TCDC-17-T06
### Separate Bad-Mass Gate

$$
\boxed{
\frac{
M_{PP}
}{
\mathfrak M_m
}
\ge
\alpha
-
\kappa_{SP}s_*
-
\kappa_{PS}p_*s_*.
}
$$

因此 sufficient：

$$
\boxed{
\kappa_{SP}s_*
+
\kappa_{PS}p_*s_*
<
\alpha.
}
$$

---

# 10. Provider-Loss Budget

subtract ideal benchmark：

$$
1
=
p_*^2
+
s_*
+
p_*s_*.
$$

T06 rearranges：

## Theorem TCDC-17-T07
### Provider-Loss Budget

closure iff：

$$
\boxed{
(1-\alpha)
+
s_*
(\kappa_{SP}-1)
+
p_*s_*
(\kappa_{PS}-1)
<
p_*^2.
}
$$

left side：

# Total Provider Loss

right side：

# Benchmark Failure-Face Distance

---

# 11. Interpretation of the Loss Budget

three independent losses all consume the same：

$$
\boxed{
p_*^2
\approx
0.348827388387
}
$$

budget。

### Neutral loss

$$
1-\alpha.
$$

### Semiprime-upper excess

$$
s_*(\kappa_{SP}-1).
$$

### Mixed-upper excess

$$
p_*s_*(\kappa_{PS}-1).
$$

所以：

> 不能只看某一個 upper multiplier是否「看起來還行」；
> 必須看全部 provider loss的加總。

---

# 12. Minimum Neutral Efficiency

even if both upper providers are ideal：

$$
\kappa_{SP}
=
\kappa_{PS}
=
1,
$$

T06 requires：

## Corollary TCDC-17-C01

$$
\boxed{
\alpha
>
s_*+p_*s_*
=
1-p_*^2.
}
$$

numerically：

$$
\boxed{
\alpha
>
0.651172611613.
}
$$

所以 neutral lower若丟掉超過約：

$$
\boxed{
34.88\%
}
$$

main mass，

separate stack甚至在 perfect uppers下也不可能 closure。

---

# 13. One Ideal Upper at a Time

## Semiprime upper ideal

if：

$$
\kappa_{SP}=1,
$$

T06 gives：

## Corollary TCDC-17-C02

for：

$$
\alpha=1,
$$

$$
\boxed{
\kappa_{PS}
<
\frac{
1-s_*
}{
p_*s_*}
=
\frac1{s_*}
}
$$

numerically：

$$
\boxed{
\kappa_{PS}
<
2.442695040889.
}
$$

---

# 14. Mixed upper ideal

if：

$$
\kappa_{PS}=1,
$$

then：

## Corollary TCDC-17-C03

for：

$$
\alpha=1,
$$

$$
\boxed{
\kappa_{SP}
<
\frac{
1-p_*s_*
}{
s_*}
}
$$

numerically：

$$
\boxed{
\kappa_{SP}
<
1.852078931739.
}
$$

---

# 15. Equal-Multiplier Gate

if：

$$
\kappa_{SP}
=
\kappa_{PS}
=
\kappa,
$$

then：

## Corollary TCDC-17-C04

$$
\boxed{
\kappa
<
\frac{
\alpha
}{
s_*+p_*s_*}
}
$$

for general：

$$
\alpha.
$$

selected values：

| Neutral efficiency $\alpha$ | max equal multiplier $\kappa$ |
|---:|---:|
| $1.000000$ | $1.535691$ |
| $0.950000$ | $1.458907$ |
| $0.900000$ | $1.382122$ |
| $0.800000$ | $1.228553$ |
| $0.700000$ | $1.074984$ |
| $0.651173$ | $1.000000$ |

at：

$$
\alpha=1,
$$

$$
\boxed{
\kappa
<
1.535691124237.
}
$$

---

# 16. Coupled Bad-Mass Discount

separate upper：

$$
U_{SP}+U_{PS}
$$

may double-count failure resources。

define a coupled bad-mass support：

$$
\boxed{
B_{\max}
}
$$

with：

$$
\boxed{
B_{\max}
\le
U_{SP}+U_{PS}.
}
$$

define normalized coupling discount：

## Definition TCDC-17-D01

$$
\boxed{
\chi
=
\frac{
U_{SP}+U_{PS}-B_{\max}
}{
\mathfrak M_m
}.
}
$$

---

# 17. Coupled Simplex Gate

if：

$$
B_{\max}
\le
\left(
\kappa_{SP}s_*
+
\kappa_{PS}p_*s_*
-
\chi
\right)
\mathfrak M_m,
$$

then：

## Theorem TCDC-17-T08

$$
\boxed{
\frac{
M_{PP}
}{
\mathfrak M_m
}
\ge
\alpha
-
\kappa_{SP}s_*
-
\kappa_{PS}p_*s_*
+
\chi.
}
$$

closure if：

$$
\boxed{
\chi
>
\kappa_{SP}s_*
+
\kappa_{PS}p_*s_*
-
\alpha.
}
$$

---

# 18. Required Coupling Discount

define：

## Definition TCDC-17-D02

$$
\boxed{
\chi_{\mathrm{req}}
=
\left(
\kappa_{SP}s_*
+
\kappa_{PS}p_*s_*
-
\alpha
\right)_+.
}
$$

Then any coupled LP / Hall / mirror improvement only needs：

$$
\boxed{
\chi>\chi_{\mathrm{req}}.
}
$$

This turns：

> coupling might help

into：

# Exact Discount Target

---

# 19. Coupling Extends the Provider-Loss Budget

T07 + T08：

closure iff：

$$
\boxed{
(1-\alpha)
+
s_*(\kappa_{SP}-1)
+
p_*s_*(\kappa_{PS}-1)
<
p_*^2+\chi.
}
$$

所以 coupled transport直接增加 usable budget：

$$
\boxed{
p_*^2
\to
p_*^2+\chi.
}
$$

---

# 20. Semiprime Marginal Least-Factor Shell

exact：

$$
\boxed{
n_{SP}
=
\sum_{r>z}n_r.
}
$$

write least factor：

$$
\boxed{
r=X^t,
\qquad
\frac13\le t\le\frac12.
}
$$

prime cofactor：

$$
p
$$

lives at：

$$
\boxed{
X^{1-t}.
}
$$

ideal semiprime shell density is weighted by：

$$
\boxed{
\frac{
dt
}{
t(1-t)
}.
}
$$

and total shell integral：

$$
\boxed{
\int_{1/3}^{1/2}
\frac{
dt
}{
t(1-t)
}
=
\log2.
}
$$

---

# 21. Fixed-Row Opposite-Rough Upper

for fixed：

$$
r=X^t,
$$

row mass：

$$
n_r
$$

requires：

- $p$ prime；
- opposite endpoint RootRough to：
  $$
  z=X^{1/3}.
  $$

Treating the prime cofactor sequence as the base，

a standard dimension-$1$ upper linear sieve has parameter：

$$
\boxed{
s_r
=
\frac{
\log D_r
}{
\log z
}.
}
$$

---

# 22. Absolute Row-Level Distribution Ceiling

the prime cofactor interval has scale：

$$
X^{1-t}.
$$

even under an idealized full row-scale distribution：

$$
\boxed{
D_r
\le
X^{1-t+o(1)}.
}
$$

therefore：

## Theorem TCDC-17-T09

$$
\boxed{
s_r
\le
3(1-t)+o(1).
}
$$

for：

$$
1/3\le t\le1/2.
$$

so：

$$
\boxed{
3/2
\le
s_r
\le
2
}
$$

at the best possible rowwise scale。

---

# 23. Best Standard Linear Upper on Each Row

linear sieve：

$$
\boxed{
F(s)
=
\frac{
2e^\gamma
}{s}
}
$$

for：

$$
1<s\le3.
$$

Since：

$$
F
$$

decreases in this range，

the most optimistic direct fixed-row standard upper takes：

$$
s_r=3(1-t).
$$

So row multiplier：

## Diagnostic TCDC-17-D03

$$
\boxed{
F_{\mathrm{best,row}}(t)
=
\frac{
2e^\gamma
}{
3(1-t)
}.
}
$$

This is an architecture benchmark：

it assumes the entire row-scale distribution is available。

---

# 24. Shell-Averaged Best Rowwise Multiplier

normalize by ideal semiprime shell：

$$
\log2.
$$

define：

## Definition TCDC-17-D04

$$
\boxed{
\kappa_{SP}^{\mathrm{row}}
=
\frac1{\log2}
\int_{1/3}^{1/2}
\frac{
2e^\gamma
}{
3(1-t)
}
\frac{
dt
}{
t(1-t)
}.
}
$$

---

# 25. Exact Evaluation

partial fraction：

$$
\frac1{
t(1-t)^2
}
=
\frac1t
+
\frac1{1-t}
+
\frac1{(1-t)^2}.
$$

therefore：

$$
\int_{1/3}^{1/2}
\frac{
dt
}{
t(1-t)^2
}
=
\frac12+\log2.
$$

So：

## Theorem TCDC-17-T10
### Optimistic Fixed-Row Linear Multiplier

$$
\boxed{
\kappa_{SP}^{\mathrm{row}}
=
\frac{
2e^\gamma
}{
3\log2
}
\left(
\frac12+\log2
\right).
}
$$

numerically：

$$
\boxed{
\kappa_{SP}^{\mathrm{row}}
\approx
2.043896393626.
}
$$

---

# 26. Semiprime Bad-Mass Cost

relative to neutral benchmark：

$$
\boxed{
\kappa_{SP}^{\mathrm{row}}s_*
\approx
0.836738258118.
}
$$

So even the best-case direct fixed-row standard linear upper consumes approximately：

$$
\boxed{
83.67\%
}
$$

of the total neutral benchmark。

---

# 27. Fixed-Row Standard Upper + Ideal Mixed Upper No-Go

even grant：

$$
\boxed{
\kappa_{PS}=1
}
$$

and：

$$
\boxed{
\alpha=1,
}
$$

bad mass benchmark becomes：

$$
\boxed{
\kappa_{SP}^{row}s_*
+
p_*s_*
\approx
1.078526978880.
}
$$

which satisfies：

$$
\boxed{
>1.
}
$$

Therefore：

## Provider No-Go TCDC-17-N01

within the rank-one benchmark normalization：

$$
\boxed{
\text{best-case standard fixed-row linear semiprime upper}
+
\text{ideal mixed upper}
}
$$

still cannot satisfy the separate bad-mass simplex gate。

---

# 28. Minimum Coupling Discount for This Stack

T18：

$$
\boxed{
\chi_{\mathrm{req}}
\approx
0.078526978880.
}
$$

even with：

- perfect neutral lower：
  $$
  \alpha=1;
  $$
- ideal mixed upper：
  $$
  \kappa_{PS}=1.
  $$

So coupled transport must recover at least about：

$$
\boxed{
7.85\%
}
$$

of the neutral benchmark mass just to compensate for the rowwise semiprime-upper architecture。

---

# 29. Equivalent Impossible Mixed Multiplier

if no coupling：

$$
\chi=0,
$$

and semiprime upper remains：

$$
\kappa_{SP}^{row},
$$

then mixed multiplier would need：

## Corollary TCDC-17-C05

$$
\boxed{
\kappa_{PS}
<
\frac{
1-\kappa_{SP}^{row}s_*
}{
p_*s_*}
}
$$

numerically：

$$
\boxed{
\kappa_{PS}
<
0.675224805224.
}
$$

This lies below：

$$
1,
$$

the rank-one ideal benchmark。

So within this benchmark，

no physically reasonable standalone mixed upper can rescue the rowwise semiprime provider。

---

# 30. Conclusion of the Rowwise Audit

the main problem is now clear：

$$
\boxed{
\text{semiprime marginal cannot be handled by independent fixed-row standard linear uppers}.
}
$$

This conclusion is stronger than：

> current theorem constants happen to be loose。

Even granting each row its full interval-scale distribution，

the shell-averaged standard multiplier remains too large for the bad-mass simplex。

---

# 31. Aggregate Level-Lift as the Escape Route

fixed row：

$$
r
$$

offers only one prime variable：

$$
p.
$$

aggregate over：

$$
r,p
$$

creates a prime-product convolution：

$$
\boxed{
rp
}
$$

and divisibility condition：

$$
d\mid2m-rp.
$$

This permits mean-value distribution unavailable to a single row。

Therefore：

# Semiprime Marginal Escape Route

is：

$$
\boxed{
\text{$r$-average}
+
\text{convolution distribution}
+
\text{upper sieve}.
}
$$

---

# 32. Effective Sieve-Parameter Profile

let aggregate technology provide an effective profile：

$$
\boxed{
\sigma(t)
}
$$

for shell：

$$
r=X^t.
$$

Then linear-upper functional：

## Definition TCDC-17-D05

$$
\boxed{
\mathcal K_{SP}[\sigma]
=
\frac1{\log2}
\int_{1/3}^{1/2}
F(\sigma(t))
\frac{
dt
}{
t(1-t)
}.
}
$$

Target：

$$
\boxed{
\mathcal K_{SP}[\sigma]
<
\kappa_{SP}^{\mathrm{target}}.
}
$$

---

# 33. Target if Mixed Upper Is Ideal

from C03：

$$
\boxed{
\kappa_{SP}^{\mathrm{target}}
=
1.852078931739
}
$$

when：

$$
\alpha=1,
\quad
\kappa_{PS}=1.
$$

so aggregate distribution must reduce：

$$
\boxed{
2.043896\ldots
\to
<1.852079\ldots
}
$$

at minimum。

---

# 34. Constant Effective Parameter Heuristic

if：

$$
\sigma(t)\equiv s_{\mathrm{eff}}
$$

and：

$$
1<s_{\mathrm{eff}}\le3,
$$

then：

$$
\mathcal K_{SP}
=
F(s_{\mathrm{eff}})
=
\frac{
2e^\gamma
}{
s_{\mathrm{eff}}
}.
$$

To beat：

$$
\kappa_{SP}^{target},
$$

need：

## Diagnostic TCDC-17-D06

$$
\boxed{
s_{\mathrm{eff}}
>
1.923322367603.
}
$$

---

# 35. Fixed Rows Reach This Only Near the Cube-Root Edge

best fixed row：

$$
s_r=3(1-t).
$$

condition：

$$
3(1-t)>s_{\mathrm{eff}}^{req}
$$

gives：

## Diagnostic TCDC-17-D07

$$
\boxed{
t
<
0.358892544132.
}
$$

But semiprime shell extends to：

$$
1/2.
$$

So only a narrow least-factor zone：

$$
\boxed{
1/3
\le t
<
0.3589\ldots
}
$$

has enough rowwise sieve parameter even to meet the mixed-ideal target pointwise。

The majority of the logarithmic shell requires aggregate level lift。

---

# 36. Provider-Lift Functional

define gain relative to rowwise ceiling：

$$
\boxed{
G_{\mathrm{lift}}
=
\kappa_{SP}^{row}
-
\mathcal K_{SP}[\sigma].
}
$$

minimum needed：

$$
\boxed{
G_{\mathrm{lift}}
>
\kappa_{SP}^{row}
-
\kappa_{SP}^{target}.
}
$$

numerically：

$$
\boxed{
G_{\mathrm{lift}}
>
0.191817461887.
}
$$

if mixed upper ideal and no coupling。

---

# 37. Coupling Reduces Required Level Lift

with coupling discount：

$$
\chi,
$$

simplex gate：

$$
\kappa_{SP}s_*
+
\kappa_{PS}p_*s_*
-
\chi
<
\alpha.
$$

so semiprime target becomes：

## Theorem TCDC-17-T11

$$
\boxed{
\kappa_{SP}
<
\frac{
\alpha
-
\kappa_{PS}p_*s_*
+
\chi
}{
s_*}.
}
$$

Thus every coupled discount unit：

$$
\chi
$$

relaxes semiprime multiplier by：

$$
\boxed{
\chi/s_*.
}
$$

---

# 38. Neutral Lower Loss Tightens the Target

same T11：

every neutral loss：

$$
1-\alpha
$$

tightens allowable semiprime multiplier by：

$$
\boxed{
(1-\alpha)/s_*.
}
$$

So aggregate semiprime upper and neutral lower cannot be optimized independently。

---

# 39. Modern Large-Moduli Technology Role

Maynard's well-factorable large-moduli theorem reaches moduli：

$$
\boxed{
x^{3/5-\varepsilon}
}
$$

for suitably weighted prime distribution。

Uniform-residue-class results also exceed：

$$
x^{1/2}
$$

for moduli with conveniently sized divisors。

These results do not automatically prove the exact TCDC semiprime marginal upper，

but they supply precisely the kind of：

# Aggregate Level Lift

that fixed rows cannot access。

---

# 40. Required Theorem Shape

TCDC semiprime marginal needs an estimate schematically：

$$
\boxed{
\sum_{r\in\mathcal R}
\sum_{\substack{
p\in\mathbb P\\
rp\le X
}}
\mathbf1_{
\operatorname{RootRough}_z(2m-rp)
}
}
$$

from above，

with：

- $r$ prime；
- $p$ prime；
- $r$ spanning：
  $$
  X^{1/3}\text{ to }X^{1/2};
  $$
- growing Goldbach residue：
  $$
  2m;
  $$
- enough weighted mean distribution across $r$。

This is not the same as a collection of independent fixed-row Brun–Titchmarsh bounds。

---

# 41. Shell Partition

partition：

$$
\left[
1/3,1/2
\right]
=
I_1\cup\cdots\cup I_J.
$$

For each shell：

$$
I_j,
$$

derive：

$$
\boxed{
\kappa_{SP,j}
}
$$

using the best legal provider。

Then total：

## Theorem TCDC-17-T12

$$
\boxed{
\kappa_{SP}
=
\frac{
\sum_j
w_j\kappa_{SP,j}
}{
\sum_jw_j
}
}
$$

where：

$$
\boxed{
w_j
=
\int_{I_j}
\frac{
dt
}{
t(1-t)
}.
}
$$

This makes semiprime provider optimization a weighted shell-allocation problem。

---

# 42. Provider Portfolio

possible shell choices：

### Near cube root

fixed-row upper may already be adequate。

### Middle shell

use aggregate convolution / well-factorable estimates。

### Near square root

short rows are poor individually；

use：

- switching；
- dual factorization；
- transport LP；
- exact center locks。

So the optimal semiprime marginal theorem need not use one provider globally。

---

# 43. TCDC Resource Allocation Returns

TCDC-09 used LP shadow prices across rows。

TCDC-17 uses：

$$
\boxed{
w(t)
=
1/[t(1-t)]
}
$$

as asymptotic bad-mass value density。

So analytic effort should target shells with high product：

$$
\boxed{
\text{shell mass}
\times
\text{multiplier excess}
\times
\text{available level lift}.
}
$$

This is the continuum analogue of proof-resource allocation。

---

# 44. Coupled Bad-Mass LP

separate simplex：

$$
U_{SP}+U_{PS}.
$$

But the same semiprime row contributes simultaneously to：

- marginal mass；
- possible mixed mass；
- internal $SS$ flow。

Therefore a coupled transport polytope can directly maximize：

## Definition TCDC-17-D08

$$
\boxed{
B_{\max}
=
\sup
\left(
n_{SP}+M_{PS}
\right).
}
$$

subject to all TCDC failure constraints。

Then：

$$
\boxed{
M_{PP}
\ge
L_S-B_{\max}.
}
$$

---

# 45. Coupled Discount Is Not Abstract

TCDC-12 / 13 provide explicit mechanisms：

- prime-sink saturation；
- mirror receiver competition；
- center locks；
- network doubling；
- mixed-capacity deficiencies。

All of these can lower：

$$
B_{\max}
$$

below：

$$
U_{SP}+U_{PS}.
$$

So the required：

$$
\chi_{\mathrm{req}}
$$

in T18 has concrete transport sources。

---

# 46. Finite Exact Simplex Audit

using canonical cube-root RootRough states，

selected exact cases：

| $m$ | $S_m$ | $a=n_{SP}/S$ | $b=M_{PS}/S$ | bad sum $a+b$ | good $M_{PP}/S$ |
|---:|---:|---:|---:|---:|---:|
| 19 | 7 | 0.285714 | 0.285714 | 0.571429 | 0.428571 |
| 96 | 38 | 0.236842 | 0.184211 | 0.421053 | 0.578947 |
| 255 | 98 | 0.204082 | 0.142857 | 0.346939 | 0.653061 |
| 496 | 70 | 0.357143 | 0.271429 | 0.628571 | 0.371429 |
| 783 | 184 | 0.255435 | 0.190217 | 0.445652 | 0.554348 |
| 870 | 234 | 0.205128 | 0.145299 | 0.350427 | 0.649573 |
| 969 | 202 | 0.242574 | 0.113861 | 0.356436 | 0.643564 |
| 1000 | 136 | 0.257353 | 0.198529 | 0.455882 | 0.544118 |
| 4801 | 369 | 0.330623 | 0.254743 | 0.585366 | 0.414634 |

These are exact finite counts for the stated boundary construction。

---

# 47. Finite Scan to $m\le5000$

computational scan：

$$
3\le m\le5000.
$$

observed：

## Computational Diagnostic TCDC-17-D09

maximum bad-mass fraction：

$$
\boxed{
\max(a_m+b_m)
=
0.628571\ldots
}
$$

at：

$$
\boxed{
m=496.
}
$$

equivalently minimum observed ordered $PP$ density：

$$
\boxed{
\min
\frac{M_{PP}}{S_m}
=
0.371428\ldots
}
$$

at the same case。

benchmark rank-one $PP$ density：

$$
\boxed{
p_*^2
\approx
0.348827388387.
}
$$

So finite sample lies even farther from failure face than the rank-one benchmark。

This is computational evidence only。

---

# 48. Finite Semiprime Marginal

same scan observed maximum：

$$
\boxed{
a_m
=
n_{SP}/S_m
}
$$

approximately：

$$
\boxed{
0.357143
}
$$

in the scanned range，

below benchmark：

$$
s_*
\approx
0.409383890850.
$$

Again this is finite evidence，

not an asymptotic theorem。

---

# 49. Why This Does Not Solve the Constant Problem

finite bias may be caused by：

- small center factors；
- endpoint geometry；
- small cube-root cutoff；
- arithmetic singular series；
- finite-size parity bias。

So no extrapolation to：

$$
m\to\infty
$$

is legal。

The finite scan is useful only to test whether the simplex framework captures actual data coherently。

---

# 50. Bad-Mass Simplex vs Parity Plane

TCDC-15 parity coordinates：

$$
(\Lambda,\mathcal C).
$$

TCDC-17 bad coordinates：

$$
(a,b).
$$

The transformation is exact：

## Theorem TCDC-17-T13

$$
\boxed{
a
=
\frac{
1+\Lambda
}{2},
}
$$

$$
\boxed{
b
=
\frac{
1-\mathcal C
}{4}.
}
$$

inverse：

$$
\boxed{
\Lambda
=
2a-1,
}
$$

$$
\boxed{
\mathcal C
=
1-4b.
}
$$

So the bad-mass simplex and parity plane are the same geometry in different coordinates。

---

# 51. Failure Face Correspondence

bad-mass failure：

$$
a+b=1.
$$

substitute T13：

$$
\frac{
1+\Lambda
}{2}
+
\frac{
1-\mathcal C
}{4}
=
1.
$$

equivalent：

$$
\boxed{
\mathcal C
=
2\Lambda-1.
}
$$

exactly TCDC-15 failure line。

So：

# Capacity Coordinates

and：

# Parity Coordinates

are affine-dual descriptions of the same failure surface。

---

# 52. Why Bad-Mass Coordinates Are Better for Positive Sieve Providers

in parity coordinates，

need：

- sign cancellation；
- Liouville means。

in bad-mass coordinates，

need：

- positive neutral lower；
- positive bad upper。

Thus T13 justifies using different coordinates for different tools。

TCDC does not insist on one representation。

---

# 53. Main Research Decision after TCDC-17

standard fixed-row semiprime upper is now ruled out as the sole separate provider architecture at benchmark level。

Therefore next effort should prioritize：

1. aggregate $r$-averaged semiprime marginal upper；
2. shell-specific convolution level lift；
3. coupled bad-mass discount；
4. only secondarily improve standalone mixed upper。

This is a sharper priority ordering than TCDC-16。

---

# 54. Formal Theorem Queue

```yaml
TCDC_17:

  T01:
    exact_matrix_in_bad_mass_coordinates

  T02:
    bad_mass_simplex

  T03:
    Goldbach_failure_face

  T04:
    bad_mass_distance_equals_PP_density

  T05:
    benchmark_distance_equals_p_star_squared

  T06:
    separate_bad_mass_gate

  T07:
    provider_loss_budget

  T08:
    coupled_simplex_gate

  T09:
    fixed_row_sieve_parameter_ceiling

  T10:
    optimistic_fixed_row_semiprime_multiplier

  T11:
    coupling_relaxes_semiprime_multiplier

  T12:
    shell_weighted_provider_portfolio

  T13:
    affine_equivalence_bad_mass_and_parity_coordinates
```

---

# 55. Provider No-Go Queue

```yaml
TCDC_17_NoGo:

  N01:
    best_case_fixed_row_linear_semiprime_upper
    plus_ideal_mixed_upper:
      exceeds_simplex_boundary

  row_semiprime_multiplier:
    2.043896393626

  semiprime_bad_cost:
    0.836738258118

  with_ideal_mixed_bad_cost:
    1.078526978880

  minimum_coupling_discount:
    0.078526978880

  mixed_multiplier_needed_without_coupling:
    0.675224805224
```

---

# 56. Barrier Queue

```yaml
TCDC_17_Barriers:

  B01:
    aggregate_semiprime_marginal_upper_not_proved

  B02:
    effective_shell_level_profile_unknown

  B03:
    growing_Goldbach_residue_uniformity

  B04:
    neutral_lower_efficiency_not_jointly_matched

  B05:
    mixed_upper_still_has_constant_loss

  B06:
    coupled_bad_mass_discount_not_uniformly_quantified

  B07:
    no_positive_simplex_gap
```

---

# 57. Acceptance Gate

TCDC-17 formal core前需：

1. bad-mass coordinates exact；
2. feasible triangle derived from matrix positivity；
3. failure edge exact；
4. benchmark point explicitly heuristic / transferred benchmark；
5. provider normalization separated from actual theorem；
6. loss-budget algebra checked；
7. neutral efficiency threshold stated benchmark-conditionally；
8. fixed-row distribution ceiling correctly scoped；
9. linear-sieve $F(s)$ valid range checked；
10. shell integral evaluated；
11. rowwise no-go labeled provider-architecture benchmark；
12. aggregate level-lift only target, not claimed theorem；
13. finite scan labeled computational；
14. no Goldbach proof claim。

---

# 58. Verdict

本輪可以正式給：

$$
\boxed{
\mathrm{TCDC\mbox{-}17\ BAD\mbox{-}MASS\ SIMPLEX\ PASS}.
}
$$

最重要 exact geometry：

$$
\boxed{
\frac{
M_{PP}
}{
S_m
}
=
1-a_m-b_m,
}
$$

with：

$$
\boxed{
a_m
=
n_{SP}/S_m,
\qquad
b_m
=
M_{PS}/S_m.
}
$$

feasible：

$$
\boxed{
0\le b\le a,
\qquad
a+b\le1.
}
$$

failure face：

$$
\boxed{
a+b=1.
}
$$

rank-one Buchstab benchmark point：

$$
\boxed{
(a_*,b_*)
=
(s_*,p_*s_*),
}
$$

has failure-face slack：

$$
\boxed{
p_*^2
\approx
0.348827388387.
}
$$

Therefore all provider losses share one budget：

$$
\boxed{
(1-\alpha)
+
s_*(\kappa_{SP}-1)
+
p_*s_*(\kappa_{PS}-1)
<
p_*^2+\chi.
}
$$

The key analytic no-go：

even with the **best possible row-scale distribution** for every fixed semiprime row，

standard linear upper sieve gives：

$$
\boxed{
\kappa_{SP}^{row}
=
\frac{
2e^\gamma
}{
3\log2
}
\left(
\frac12+\log2
\right)
\approx
2.043896393626.
}
$$

Hence semiprime upper alone costs：

$$
\boxed{
0.836738258118
}
$$

of the neutral benchmark。

Even granting ideal mixed upper：

$$
p_*s_*
\approx
0.241788720763,
$$

total bad mass becomes：

$$
\boxed{
1.078526978880
>1.
}
$$

So：

$$
\boxed{
\text{independent fixed-row standard semiprime uppers cannot close the simplex}.
}
$$

At least one of the following is mandatory：

1. aggregate convolution level lift；
2. switching；
3. coupled bad-mass discount；
4. a genuinely stronger nonstandard semiprime upper。

With ideal mixed upper and perfect neutral lower，

the fixed-row stack already requires coupled recovery：

$$
\boxed{
\chi>
0.078526978880.
}
$$

or roughly：

$$
\boxed{
7.85\%
}
$$

of the normalized neutral mass。

Thus the next bottleneck is no longer vague：

# Lift the Semiprime Marginal Upper off the Fixed-Row Ceiling

目前：

$$
\boxed{
\mathrm{NO\ UNIFORM\ SIMPLEX\ GAP\ YET}.
}
$$

因此：

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

---

# 59. 下一輪建議

# TCDC-18
## Aggregate Semiprime-Marginal Convolution / Level-Lift Closure

下一輪停止 finite-row upper。

直接攻：

$$
\boxed{
n_{SP}
=
\sum_{z<r\le\sqrt X}
n_r
}
$$

as one aggregate convolution object。

### Part A — Dyadic Least-Factor Shells

set：

$$
r=X^t.
$$

partition：

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

### Part B — Convolution Distribution Level

for each shell，

seek effective：

$$
\sigma(t)
>
3(1-t)
$$

from averaging in：

$$
r.
$$

### Part C — Upper Functional

evaluate：

$$
\boxed{
\mathcal K_{SP}[\sigma]
=
\frac1{\log2}
\int
F(\sigma(t))
\frac{dt}{t(1-t)}.
}
$$

target：

$$
\boxed{
\mathcal K_{SP}
<
1.852079\ldots
}
$$

if mixed upper remains ideal benchmark。

### Part D — Technology Match

audit：

- Maynard well-factorable；
- Maynard uniform residue；
- Yang convolution-BV；
- switching / complementary divisor；

shell by shell。

### Part E — Coupling Trade

if only：

$$
\mathcal K_{SP}
=
1.9
$$

is reachable，

compute exact：

$$
\chi_{\mathrm{req}}
$$

rather than abandoning the route。

This will be the first round to measure precisely how much **aggregate distribution level** is needed to move the semiprime bad-mass point inside the Goldbach simplex。

---

# 附錄 A：Bad-Mass Simplex

```yaml
coordinates:

  a:
    n_SP/S

  b:
    M_PS/S

matrix:

  PP:
    1-a-b

  PS:
    b

  SS:
    a-b

feasible:
  0 <= b <= a
  a+b <= 1

failure:
  a+b == 1
```

---

# 附錄 B：Benchmark Point

```yaml
p_star:
  0.590616109150

s_star:
  0.409383890850

a_star:
  s_star

b_star:
  p_star*s_star

failure_distance:
  p_star^2:
    0.348827388387
```

---

# 附錄 C：Provider Budget

```yaml
neutral_lower:
  alpha

semiprime_upper:
  kappa_SP*s_star

mixed_upper:
  kappa_PS*p_star*s_star

coupling_discount:
  chi

closure:
  kappa_SP*s_star
  + kappa_PS*p_star*s_star
  - chi
  <
  alpha

loss_form:
  (1-alpha)
  + s_star*(kappa_SP-1)
  + p_star*s_star*(kappa_PS-1)
  <
  p_star^2+chi
```

---

# 附錄 D：Fixed-Row No-Go

```yaml
least_factor:
  r:
    X^t

t_range:
  1/3_to_1/2

row_prime_scale:
  X^(1-t)

max_row_distribution:
  D_r:
    X^(1-t)

best_s:
  3*(1-t)

linear_upper:
  F:
    2*exp(gamma)/s

weighted_average_multiplier:
  2.043896393626

bad_cost:
  0.836738258118

plus_ideal_mixed:
  1.078526978880

required_coupling:
  0.078526978880
```

---

# 附錄 E：Finite Simplex Audit

| $m$ | $S_m$ | $a=n_{SP}/S$ | $b=M_{PS}/S$ | bad sum | $PP/S$ |
|---:|---:|---:|---:|---:|---:|
| 19 | 7 | 0.285714 | 0.285714 | 0.571429 | 0.428571 |
| 96 | 38 | 0.236842 | 0.184211 | 0.421053 | 0.578947 |
| 255 | 98 | 0.204082 | 0.142857 | 0.346939 | 0.653061 |
| 496 | 70 | 0.357143 | 0.271429 | 0.628571 | 0.371429 |
| 783 | 184 | 0.255435 | 0.190217 | 0.445652 | 0.554348 |
| 870 | 234 | 0.205128 | 0.145299 | 0.350427 | 0.649573 |
| 969 | 202 | 0.242574 | 0.113861 | 0.356436 | 0.643564 |
| 1000 | 136 | 0.257353 | 0.198529 | 0.455882 | 0.544118 |
| 4801 | 369 | 0.330623 | 0.254743 | 0.585366 | 0.414634 |

scan $3\le m\le5000$:
- maximum observed bad sum: $0.628571\ldots$ at $m=496$;
- minimum observed $PP/S$: $0.371428\ldots$ at $m=496$;
- all statements computational only.

---

# 附錄 F：Commit Decision

```yaml
research_round:
  TCDC-17

decision:

  bad_mass_simplex:
    proved

  provider_loss_budget:
    proved

  neutral_efficiency_threshold:
    derived

  fixed_row_semiprime_linear_upper:
    audited

  fixed_row_provider_stack:
    no_go_at_benchmark_level

  aggregate_level_lift:
    required

  coupled_discount_target:
    quantified

  uniform_simplex_gap:
    not_proved

  Goldbach_proved:
    false

next:
  TCDC-18_AggregateSemiprimeMarginal_Convolution_LevelLift_Closure
```

---

# References / External Benchmarks

1. Terence Tao, **254A, Supplement 5: The linear sieve and Chen's theorem**, 2015.

   Relevant fact:
   for the dimension-$1$ linear sieve,
   $$
   F(s)=\frac{2e^\gamma}{s}
   $$
   for $1<s\le3$, while the lower function vanishes for $s\le2$. The fixed-row semiprime upper audit in this paper uses only the upper-function formula in its valid range.

2. Terence Tao, **254A, Notes 4: Some sieve theory**, 2015.

   Relevant fact:
   the Selberg upper sieve gives positive upper envelopes with the correct logarithmic order but generally loses fixed constants; this motivates treating upper multipliers as explicit budget variables rather than assuming order-of-magnitude control is enough.

3. James Maynard, **Primes in arithmetic progressions to large moduli II: Well-factorable estimates**, *Memoirs of the American Mathematical Society* 306 (1543), 2025.

   Relevant fact:
   mean distribution for primes with suitably well-factorable weights is available to moduli as large as $x^{3/5-\varepsilon}$. This is a candidate source of aggregate level lift unavailable in a fixed row.

4. James Maynard, **Primes in arithmetic progressions to large moduli III: Uniform residue classes**, *Memoirs of the American Mathematical Society* 306 (1544), 2025.

   Relevant fact:
   mean-value estimates beyond $x^{1/2}$ are available for moduli with conveniently sized divisors, uniformly in residue classes. This is potentially relevant to shell-specific aggregate convolution providers, but no direct TCDC semiprime-marginal theorem is asserted here.
