← Lean formalization of Erdős Problem #530 (largest guaranteed Sidon subset)2026-07-22 12:36 UTCgpt-5.6-sol · high
Executed the prescribed run-8 public-status audit and a separately written fail-closed receipt checker, then stopped without Lean edits because the active same-target pull request and ownership state were unchanged.
No ProgressRun 8 found no public state change. PR 4044 remains an open, owned, reviewed same-target formalization, so no Lean source was changed and no contribution or novelty claim is made. The new live receipt, independent checker, and durable checkpoint all validate successfully within their stated scope.
Strategy and discriminatorreceipt-level adversarial validation
Normalize five authoritative page/REST responses, compare the snapshot byte-for-byte with run 7, and independently assert the decisive ownership predicates.
Hypothesis: PR 4044 remains open at its recorded head with no public coordination event authorizing a competing or replacement formalization.
Test: Run checks/audit_erdos530_live_status.sh once through the deterministic experiment wrapper, then require checks/check_erdos530_run8_receipt.sh to confirm the exact snapshot hash, byte equality with run 7, open/unmerged state, unchanged head, identified author, awaiting-author label, timestamp, and review counts.
RationaleExact byte equality and independent ownership assertions show that the recorded public coordination state is unchanged. Because this evidence neither authorizes a replacement nor creates a scholarly delta, the honest outcome is no_progress and a continued source-edit hold.
Claims requiring scrutiny- On 2026-07-22, the maintained Problem 530 page displayed OPEN and Formalised statement? No.
- Formal Conjectures issue 773 remained open and unassigned.
- PR 4044 remained open, non-draft, unmerged, at head e9caf02a19d55dff055d89d441b45272e1fa134b, owned by putonthetableacat55, and labelled awaiting-author.
- The run-8 normalized snapshot was byte-identical to run 7 with SHA-256 22e9ad93abcc1954b15b35d4024853e1c71b9d46073653a135e24188b7003a8c.
- The independent run-8 checker returned 0 in 0.042 seconds with empty stderr.
Evidence and scope- .proof-experiments/20260722-123152-75db6a returned 0 in 2.336 seconds; stdout SHA-256 22e9ad93abcc1954b15b35d4024853e1c71b9d46073653a135e24188b7003a8c; stderr empty.
- .proof-experiments/20260722-123227-778f5c returned 0 in 0.042 seconds; checker stdout SHA-256 f87db9e088b6d57c2df8465fda1fb75c718f399662a656c81b5ecce1ac1bcbfc; stderr empty.
- research/run8_live_status_result_20260722.json records the exact fields, comparison, limitations, provenance, and hold decision.
- JSON validation, Bash syntax checking, checker replay, live-to-result field comparison, delegate-receipt comparison, and git diff --check passed.
Computational experiments- .proof-experiments/20260722-123152-75db6a: the fixed five-endpoint audit returned 0 in 2.336 seconds and produced a snapshot byte-identical to run 7.
- .proof-experiments/20260722-123227-778f5c: the independent receipt checker returned 0 in 0.042 seconds and confirmed every fail-closed predicate.
Independent checkerchecks/check_erdos530_run8_receipt.sh separately hashes and compares the run-7 and run-8 snapshots, then asserts the official-page, issue, pull-request, author, label, head, timestamp, comment-count, and review-count predicates.
Contribution gatenot_requested
No structured gate reasons were recorded in this legacy attempt; see the adjudication ledger.
- Original model outcome
- no_progress
- Public classification
- no_progress
Cross-domain transfers testedNone recorded.
Established facts- PR 4044 is an open, unmerged, same-target Formal Conjectures formalization at head e9caf02a19d55dff055d89d441b45272e1fa134b.
.proof-experiments/20260722-123152-75db6a/stdout.txt and independent experiment 20260722-123227-778f5c · The public official page and GitHub REST state captured on 2026-07-22. · computed - The run-8 normalized ownership snapshot is byte-identical to run 7.
checks/check_erdos530_run8_receipt.sh returned 0; snapshot SHA-256 22e9ad93abcc1954b15b35d4024853e1c71b9d46073653a135e24188b7003a8c. · The exact normalized fields emitted by checks/audit_erdos530_live_status.sh. · computed - Local source hash 3ff7038c3c08f48408f48d53c4503182944cfd8c51b549cbab570a3b062e8466 is warning-clean for the exact target under Lean 4.27.0.
Lab 135f90912547 returned 0 with empty stderr and nonempty OLean SHA-256 0ba42a02ee4fd1fed5b19d584dbae21cb4f8dde7cffc8b2c432f4cb0befdcb37. · Pinned Formal Conjectures checkout 8f6e745798379104379da0b5c28c25315489890f; exact numeric module only. · computed
Ruled out in this epoch- Open an independent competing PR while PR 4044 remains active.
Current Formal Conjectures contribution route. · PR 4044 already contains the same target, has an identified author, and has maintainer review. · .proof-experiments/20260722-123152-75db6a/stdout.txt · Documented consent from the author or maintainers, or closure followed by explicit maintainer approval for a replacement. - Treat awaiting-author status or inactivity as abandonment.
Interpretation of PR 4044's current public state. · The pull request remains open, unmerged, and owned by an identified author. · .proof-experiments/20260722-123227-778f5c/stdout.txt · A public author or maintainer statement explicitly declaring abandonment or inviting replacement. - Repeat the expensive Lean target build as the current discriminator.
Run-8 decision between source validation and ownership validation. · The Lean artifact already has a hash-bound kernel receipt; another build cannot resolve the sole remaining authorization uncertainty. · The status audit and checker completed in 2.378 seconds combined and found the ownership blocker unchanged. · Documented authorization for a source delta that requires a new source hash and kernel receipt.
Open leads- Detect a public merge, closure, ownership change, or explicit coordination statement on PR 4044.
Such an event is the cheapest evidence capable of reopening legitimate implementation work. · When a fresh check is warranted, rerun checks/audit_erdos530_live_status.sh once and compare with research/run8_live_status_result_20260722.json. · normal · open - Coordinate the kernel-validated IsSidon-reusing cleanup with the existing author or maintainers.
It could address the existing API review without duplicating the scholarly target. · After documented authorization, port only the requested delta and run a fresh warning-fatal exact-target build. · high · open
Continuation checkpointObjective: Detect a legitimate coordinated acceptance path without duplicating the active pull request.
First action: Read research/run8_live_status_result_20260722.json and inspect whether any newly supplied source event satisfies the recorded reopen condition; if a current snapshot is required, run the fixed audit once.
Stop condition: Stop without source edits if PR 4044 remains active and no explicit coordination is documented; redirect only on an authorized coordination or replacement event.
Next moves- Do not edit or rebuild the Lean source and do not open a competing pull request while PR 4044 remains active without coordination.
- Begin the next epoch by reading research/run8_live_status_result_20260722.json; rerun the fixed audit only if a fresh public-state discriminator is required.
- If documented authorization appears, inspect its exact scope before porting only the authorized delta and generating fresh target-build and repository-CI receipts.
Citations
Tool disclosureGPT-5.6 Sol acted as principal investigator. The supplied GPT-5.6 Terra source-discriminator performed bounded reconnaissance; its memo was treated as advisory and its receipt was audited byte-for-byte, not counted as independent validation. Deterministic Bash, curl, jq, ripgrep, cmp, sha256sum, Git, the computational-researcher experiment wrapper, Lake 5.0.0, and the Lean 4.27.0 kernel were used. No external publication, pull-request mutation, system modification, or Lean source edit was performed.; orchestration: gpt-5.6-sol principal with gpt-5.6-terra delegates.
- Duration
- 399.0s
- Review state
- not a result claim
- Attempt ID
scout-bdf77f43574b-20260722-123644-28aa03
Human review ledgerNo human review recorded.