Not evaluated
Erdős problem #645: full solution found in the literature according to the wiki (GPT-5)
The gist
According to the teorth/erdosproblems wiki on AI and Erdős problems, GPT-5 reportedly found in the literature a full solution to problem #645 (announcement of October 20, 2025).
DiscoverIA status on October 12, 2026: not evaluated, meaning no third-party evaluation found.
AI draft, not reviewedWhat has not been reviewed?
Text written by an AI (DiscoverIA pipeline), on . The status and its sources come from the registry; only the explanatory text has not been reviewed. A reported error is corrected, then the text is reviewed.
Cite this entry
A single status snapshot since Oct 12, 2026: a citation always points to a dated snapshot.
Cite snapshot 1, Oct 12, 2026
APA citation with the dated link
BibTeX @misc, key discoveria-erdos-645-gpt-5-2a-r1
@misc{discoveria-erdos-645-gpt-5-2a-r1,
author = {{DiscoverIA}},
title = {Erdős problem #645: full solution found in the literature according to the wiki (GPT-5)},
howpublished = {DiscoverIA registry, entry erdos-645-gpt-5-2a},
note = {Status “Not evaluated”, snapshot 1, recorded on October 12, 2026. Literature search},
year = {2026},
url = {https://discoveria.ai/entry/erdos-645-gpt-5-2a#releve-1},
urldate = {2026-10-12}
}Dated link opens this snapshot in the history
To understand ≈ 20 s reading time, estimated
What it changes
The wiki files the entry as a literature search, a secondary contribution, and marks it as complete resolution. If it held, problem #645 would already have a solution in the literature, rather than a new proof from the AI.
What remains unclear
This line of the wiki cites no text from the literature, and it is unknown whether anyone has checked the solution. A check published after the wiki was frozen would not appear in it.
For experts
Sources, method, key facts, status history, report an error
Status
Not evaluated
Recorded on · github.com · wiki
Step 1 of 4 on the scale: not evaluated. Next step: under review.
- Announced
- Wiki frozen
- Recordednot evaluated
- nextTo follow
What this status means
Source reading : Source read word for word (level 3 of 3)
The result is declared neither right nor wrong.
To move to “Under review”: a public review under way. To “Peer reviewed”: a journal publication or a review by named experts.
Dated archive: status recorded on the wiki frozen on Jun 30, 2026
Sources
- Main sourcegithub.com · wikipage read word for word · consulted on Oct 12, 2026
- Reference listerdosproblems.comlink only, reading not recorded
- Corroborationterrytao.wordpress.compage read word for word · consulted on Oct 17, 2026 ·
We have created a github repository to coordinate this process
- Repositorygithub.com · CONTRIBUTING.mdpage read word for word · consulted on Oct 17, 2026 ·
this status is an unofficial crowdsourced classification of the problem
Method
Source: the “AI contributions to Erdős problems” wiki of the teorth/erdosproblems repository (a repository presented by Terence Tao in his blog post of August 31, 2025); frozen on June 30, 2026 (commit c8ad430, “freeze”) and read on October 12, 2026 in the git repository. Category 2(a), “Literature search” (secondary contribution). Humans named by the wiki: none; AI system: GPT-5. Date given by the wiki: October 20, 2025. Exact text: “Full solution found”; green flag (“full resolution”, according to the wiki's legend). Literature cited by the wiki: none. Status of the problem in the teorth/erdosproblems community database (data/problems.yaml, unofficial classification, snapshot of October 12, 2026 with no commit identified, current state, not that of June 2026): proved, answered in the affirmative (informal_status=proved); a solution has been formalised in Lean (formal_status=Lean). This status concerns the problem, not this contribution. Problem page not read by DiscoverIA: https://www.erdosproblems.com/645. DiscoverIA status: not evaluated (only the wiki's classification exists). Recorded on October 12, 2026.
Limits
DiscoverIA has not checked this contribution itself.
Key facts
- Claimed by
- GPT-5, according to the AI-Erdős wiki
announced on Oct 20, 2025 - Nature
- literature search
- Field
- Mathematics (Erdős problem #645 (number theory ; additive combinatorics ; ramsey theory ; arithmetic progressions))
- Wiki category
- Literature search (contribution secondaire : recherche bibliographique)
- Wiki verdict
- « Full solution found » : 🟢 résolution complète (légende du wiki)
- Checked by
- no verifier identified
- Sources
- 4 : 3 read word for word, 1 link only
- This entry
- AI draft, not reviewed
Status history
Only one observation so far.
An observation is added; none is ever erased.
In the same set
AI contributions to Erdős problems (wiki by T. Tao, frozen on June 30, 2026) · entry 252 of 521, by problem number
- Not evaluated : Erdős problem #635: solution to one part of the problem with a Lean proof according to the wiki (Aristotle, GPT-5.2 Pro)
- Not evaluated : Erdős problem 639: formalisation by Aristotle (proof: Keevash and Sudakov (2004))
- Not evaluated : Erdős problem #645: formalisation by Aristotle, GPT (proof: Brown and Landman (1999))
- Not evaluated : Erdős problem #645: full solution found in the literature according to the wiki (GPT-5)
- Not evaluated : Erdős problem #646: formalisation by Aristotle (proof: Berend (1997))
- Withdrawn : Erdős problem #647: proof judged incorrect by the wiki (ChatGPT Deep research, DeepSeek DeepThink, Gemini)
- Not evaluated : Erdős problem #648: formalisation by Aristotle (proof: Cambie (2025))
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