Problem detail · source-aware

The Erdos-Graham Semiprime Unit Fraction Problem

resolvedconfidence 70%

VibeMathed reports this item as resolved. VibeMath preserves that report as a source assertion and has not independently authored a plain-language mathematical explanation.

Precise statement

Every natural number is a finite sum of distinct unit fractions whose denominators are semiprimes. This is the $\omega = 2$ integer case of a problem of Erdos and Graham, left as a conjecture by Butler, Erdos and Graham, who proved the $\omega = 3$ analogue.

The source statement is reproduced for indexing with attribution. Mathematical correctness requires domain-expert or mechanical review. VibeMath has not independently audited statement fidelity, correctness, priority, or novelty.

What AI did

Claude (via Claude Code)

The paper describes itself as a human-AI collaboration and says the tools contributed substantially to the Lean formalisation.

Provider: Anthropic · Prompt public: unknown · Independence: unknown

Verification boundary

unreviewed

A Lean formalisation accompanies the work, with the model credited as a substantial contributor to it. We have not compiled it. arXiv preprint, not peer-reviewed.

Correctness: unknown · statement fidelity: unaudited · peer review: none

Timeline

  1. arXiv:2606.15159 - Every natural number is a sum of distinct semiprime unit fractions

    the omega = 2 integer case, the one Butler, Erdos and Graham left open

Known method families

argument (source-reported)

Source-reported tools: argument.

Independent: unknown · difference confidence: 0

What remains uncertain

VibeMath has not independently audited the mathematical statement, proof, or novelty claim.

  • VibeMath has not independently verified the mathematical claim.
  • AI-attempt independence and training-data exposure are unknown unless explicitly documented.
  • VibeMath has not independently audited the mathematical statement, proof, or novelty claim.