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Section 8.4, paragraph 1Theorem 5.12(i) bounds one restricted interface, not general single-policy search

Informal interpretation Motivation, interpretation or scope; not a formal claim.

1 Paper text

Theorem 5.12(i) bounds winning-move selection for fixed bit-width, a specified family of root/one-heap measurements and a polynomial-size, constant-depth readout. It does not bound general single-policy search. Within that interface, the BB structured channels reconstruct the invariant and permit direct move selection. The extra computational resource is the sequential rollout, not the number of neural output coordinates alone. Repeated deterministic measurements of the same affine channel cannot create additional channel bits, but changing the permitted query transformations or controller computation changes the model and can remove that restriction.

Generated from paper_jmlr.tex, lines 1249–1252.

2 Explain this

Theorem 5.12(i) is narrow on purpose: fixed bit-width, a specified family of root and one-heap measurements, and a polynomial-size, constant-depth readout. It does not bound general single-policy search. Within that interface, BB channels reconstruct the invariant. The extra resource is the sequential rollout, not the number of output neurons. Changing the allowed queries or controller computation changes the model and can remove the restriction.

3 How this is formalised

An interpretation of Theorem 5.12 (i) and Section 5.4, paragraph 3 (which shows how arbitrary queries would remove the restriction).

Coverage record
Paper anchorsec:multipolicy-discussion-p1 (website anchor; the manuscript has no label here)
Displayed asSection 8.4, paragraph 1
ClaimTheorem 5.12(i) bounds one restricted interface, not general single-policy search
Coverage categoryInformal interpretation
Statement sourcepaper_jmlr.tex lines 1249–1252; SHA-256 of the normalised block source 1d5275c69af4bff5…
Depends onTheorem 5.12 (i)
Explanationsexplain/c-rollout-separation, formal/c-rollout-separation
Build evidencefresh isolated rebuild, audit report

4 Lean statement and source

No Lean statement corresponds to this claim. This is interpretation or motivation, not a formal mathematical claim.

Build evidence: fresh isolated rebuild of all 38 bundled modules with Lean (version 4.26.0, started 2026-10-10T15:21:56Z, finished 2026-10-10T15:27:00Z: 38/38 modules compiled, 1588 axiom reports, no errors. See Build for the commands and the independent audit of 2026-10-10 (dated evidence).