Context
This row is imported exactly from the governed FPRD claims ledger. The matrix assignment records normalized inventory coverage; it is not a new proof or a promotion of the ledger status.
Proof or evidence
The ledger points to OPEN_PROBLEMS.md. The matrix has not yet rewritten that source into a self-contained public proof summary.
Verification notes
Reviewed on 2026-08-25 for identifier, status, provenance, evidence-link presence, and dependency import only. Mathematical proof audit remains the next action unless separately documented.
Limitations
- Rank one must recover M4. Higher rank is noncommutative free-word dynamics, not a commutative counter lattice. Exponential bounded-shadow growth is not claimed equivalent to pushdown or context-free recognition. The compact boundary is one failure point rather than a Cantor space, and no literal semi-algebraic coordinate theorem is asserted.
Notes
Rank one must recover M4. Higher rank is noncommutative free-word dynamics, not a commutative counter lattice. Exponential bounded-shadow growth is not claimed equivalent to pushdown or context-free recognition. The compact boundary is one failure point rather than a Cantor space, and no literal semi-algebraic coordinate theorem is asserted.