Failed approach · scope boundary

MRF-008

Treating coefficient-matrix sparsity counts as exact

Exact statement

Treating coefficient-matrix sparsity counts as exact. row-wise evaluation of two identical rows (1,1)(1,1) uses two additions, while a shared SLP computes one sum and fans it to both outputs, using one addition in the unbounded-fan-out model.

Statusrejected.
External reviewNo documented external or specialist review of the FPRD synthesis is recorded.

Context

The research record preserves failed approaches when they expose a model boundary, an invalid transfer, or an unsupported strengthening.

Proof or evidence

row-wise evaluation of two identical rows (1,1)(1,1) uses two additions, while a shared SLP computes one sum and fans it to both outputs, using one addition in the unbounded-fan-out model.

Verification notes

The failure status and preserved lesson are recorded in the cumulative failure ledger.

Limitations

  • sparsity gives a canonical compilation upper bound. An explicit linear SLP is needed to verify the count and dependency order of a particular realization.

Open work

Keep this exclusion attached to any future reuse of the corresponding construction.