What was already known
MRRW and Delsarte linear-programming bounds were the longstanding binary and spherical baselines.
AI involvement
OpenAI attributes the argument and Lean formalization to Astra. Humans chose the problem and prepared the manuscript.
OpenAI’s original disclosure assigns the argument and subsequent Lean formalization to Astra; human manuscript preparation is separately credited.
- Supporting source (github.com) — MetricCodes.Johnson.binaryRate_lt_mrrw
Importance
Improves upper bounds across fixed code parameters.
Limitations
These are asymptotic bounds, not exact finite-length maxima. The binary and spherical Lean targets are separate; human reviewers flagged representation-theoretic and compactness steps for further explanation.
Technical verification
The project reports a complete Lean certificate for the stated formal theorem. Human assessments have narrower scope; semantic matching and any manuscript gaps remain separately noted.
Independent checking
chapter-specific mathematical review of the published argument, with the limited coverage summarized in the audit. Table 1; Chapter 2 discussion
- Checker
- Chapter 2 human reviewers in the Sienicki et al. review corpus
- Scope
- binary and spherical bound structure and selected numerical claims
- Basis
- Reported by the linked checker
Formal checking
Lean 4.32.0 formal certificate in MetricCodes.lean; comparator target for MetricCodes.Johnson.binaryRate_lt_mrrw; manifest reports zero sorry and only standard axioms. main_results entry MetricCodes.Johnson.binaryRate_lt_mrrw; status and axioms
- Checker
- OpenAI ten-proofs project, Lean kernel and Comparator configuration
- Scope
- binary rate below MRRW and strict spherical hierarchy
- Basis
- Reported by the linked checker
Checking a formal statement does not establish that it matches the original problem.
Human understanding
Human reviews examine numerical and structural claims, while representation-theoretic and compactness interfaces are singled out for further specialist explanation and checking.
Correction and publication history
Improves upper bounds across fixed code parameters.
Read this published revision