Strinz–Claude reports: Möbius invariance of spherical Ramsey sets

Will Strinz’s project reports that a finite set of distinct unit-sphere points is Euclidean Ramsey if and only if its image under a Lorentz-model Möbius map is Ramsey, with algebraic-coordinate and circle corollaries.

Sources for this record

What was already known

OpenAI’s result 172 supplied the classification and its formal proof. Earlier work established algebraic spherical cases and certificate-level invariance; the project’s claimed advance is invariance of the Ramsey property itself.

AI involvement AI-led

Strinz directed the work. Claude agents produced the proofs, ported the supporting OpenAI development and performed checks; an exploratory Claude conversation produced the theorem and argument.

Strinz’s disclosure locates Theorem C and its proof in a Claude conversation and allocates proof production to agents; OpenAI’s classification remains a separately credited foundation.

Importance Notable

Extracts a geometric invariance principle from the existing classification and makes the stated implication formally checkable.

Limitations

The author describes this as a short consequence of OpenAI’s classification, not an independent replacement for it. Identification of the Lorentz model with the full Möbius group for sphere dimensions covered by d≥2 is cited rather than formalized; d=1 has a separate interpretation. No independent human expert review is reported. AIProofWatch has not rebuilt the formal development or audited the complete proof. Palomar reports mechanical checking of a pinned statement; its automated statement review is not human peer review. The reported date records this registry checkpoint; the earlier first-report date of the formalization has not been established.

Technical verification Formal (Lean)

A completed rigorous check is documented for the scoped statement. Palomar: Lean, NanoDa and con-ron (reported): ramsey_iff_ramsey_mobius_full and the three recorded corollaries at 52284ddf3db595776b0d651c844fbeaf7b34a641; finite distinct unit-sphere configurations and O(1,d) maps, using the standard axioms.

Formal checking

Registry-reported Comparator and kernel checking; not reproduced by AIProofWatch.

Checker
Palomar: Lean, NanoDa and con-ron (reported)
Scope
ramsey_iff_ramsey_mobius_full and the three recorded corollaries at 52284ddf3db595776b0d651c844fbeaf7b34a641; finite distinct unit-sphere configurations and O(1,d) maps, using the standard axioms.
Basis
Reported by the linked checker
Check date
2026-10-13
Evidence source

Checking a formal statement does not establish that it matches the original problem.

Human understanding Few

Few is the default when evidence for a higher level is insufficient. No sufficient account of a named human explaining the scoped central reasoning is established in this assessment. Missing disclosure is not evidence of little understanding.

Correction and publication history

2026-10-14 · publication

Source-statement, baseline, AI-role and verification-scope review, 14 October 2026. New curated contribution; eligible for matching consented digests.

Read this published revision