3905 — Both Conductor Sheet Systems Share One Descent Line
Hard-to-vary claim
The first gamma-normal Bockstein found in Entry 3902 is not a repair attached separately to one conductor branch. It is the common missing descent constructor for both independently labelled conductor systems in the chart.
Frozen test
Use the existing rank-26 physical-half-twist quotient and the two source-derived conductor equations
For each conductor retain:
- both root sheets;
- the source residue weight, including the Jacobian and denominator factors;
- deck trace and anti-trace channels separately;
- the same degree-six numerator packet and the same absolute quotient.
No transition, projector, or correction row is fitted.
Exact rank result
At primes and , the ranks are identical:
Thus the two sheet systems do not create independent descent defects. Their complete deck-resolved images share one quotient line.
Narrow conclusion
The conductor atlas requires one missing coherence line, not one line per conductor or per sheet:
Together with Entry 3902, this identifies the first gamma-normal Bockstein as the unique available source line with the correct rank to repair both conductor systems simultaneously.
This is a rank and incidence theorem. It does not yet prove the chain map, its normalization, or cyclic gluing across .
Explanatory consequence
The mixed parity seen under bare second-conductor reuse is not evidence for a second constructor. Parity is chart presentation; the common one-dimensional failure after quotient is invariant. The source normal variation supplies one coherence resource whose labelled readouts differ between conductor charts.
Next falsifier
Transport the common line through the two free cyclic conductor orbits and test the signed order-three composite. The claim fails if:
- a cyclic image enlarges the defect beyond rank one;
- the three transitions do not compose to identity on the Bockstein line;
- the induced normalization differs by a non-source unit;
- any lower commuting face is altered.
Artifacts
research/benincasa/checkers/check_rank26_two_conductor_common_descent_line.pyresearch/benincasa/results/rank26-two-conductor-common-descent-line.jsonresearch/benincasa/results/rank26-two-conductor-common-descent-line-p31957.json
Ledger sequence claim: seqclaim-53eacdf1eb7f7acca4ebb7e9.