Withdrawn
Erdős problem #411: proof judged incorrect by the wiki (Claude)
The gist
A proof put forward on April 3, 2026 for Erdős problem #411, by a human contributor working with Claude, was classed as incorrect by the wiki that tracks these contributions.
DiscoverIA status on October 12, 2026: withdrawn, meaning withdrawn or abandoned by its author, or marked incorrect by the reference source.
Text written by an AI, reviewed by Antoine Olivier,
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-411-claude-1d-r1
@misc{discoveria-erdos-411-claude-1d-r1,
author = {{DiscoverIA}},
title = {Erdős problem #411: proof judged incorrect by the wiki (Claude)},
howpublished = {DiscoverIA registry, entry erdos-411-claude-1d},
note = {Status “Withdrawn”, snapshot 1, recorded on October 12, 2026. New result},
year = {2026},
url = {https://discoveria.ai/entry/erdos-411-claude-1d#releve-1},
urldate = {2026-10-12}
}Dated link opens this snapshot in the history
To understand ≈ 20 s reading time, estimated
What it changes
On the substance, nothing changes: problem #411, a number theory question about iterated functions (a function applied again and again to its own output), was still open on erdosproblems.com as of October 12, 2026. The entry records an attempt made with AI that was judged incorrect, tracked like the successes.
What remains unclear
The sources read do not identify the error behind the classification. The wiki has been frozen since June 30, 2026, so a correction published since then would not appear there.
For experts
Sources, method, key facts, status history, report an error
Status
Withdrawn
Recorded on · github.com · wiki
Outside the verification path
- Announced
- Wiki frozen
- Recordedwithdrawn
What this status means
Source reading : Source read word for word (level 3 of 3)
Withdrawn or abandoned by its author, or marked incorrect by the reference source.
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 1(d), “AI collaborating with humans” (significant human involvement). A human contributor is named by the wiki; that person's name is not repeated here, by DiscoverIA's choice; AI system: Claude. Date given by the wiki: April 3, 2026. Exact text: “Incorrect proof found”; red flag (“incorrect work”, 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): open (informal_status=open); no formalised solution known (formal_status=unformalized). This status concerns the problem, not this contribution. Problem page not read by DiscoverIA: https://www.erdosproblems.com/411. The DiscoverIA registry also holds an entry that groups several problems, this one included; the two entries may overlap. DiscoverIA status: withdrawn, because the wiki classes this contribution as incorrect (red flag). DiscoverIA has not checked this error itself. Recorded on October 12, 2026.
Limits
DiscoverIA has not checked this contribution itself.
Key facts
- Claimed by
- a human contributor with Claude, according to the AI-Erdős wiki (Name replaced by a role)
announced on Apr 3, 2026 - Nature
- new result
- Field
- Mathematics (Erdős problem #411 (number theory ; iterated functions))
- Wiki category
- AI collaborating with humans (IA en collaboration avec des humains ; implication humaine significative)
- Wiki verdict
- « Incorrect proof found » : travail incorrect (légende du wiki)
- Checked by
- wiki maintainers (red flag)
- Sources
- 4 : 3 read word for word, 1 link only
- This entry
- Reviewed by Antoine Olivier, Oct 13, 2026
Status history
Only one observation so far.
- 01
First observation:WithdrawnCurrent status
marked incorrect by the wiki (red flag, “Incorrect work”)
Source: github.comread word for word
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 162 of 521, by problem number
- Not evaluated : Erdős problem #400: candidate partial result according to the wiki (GPT)
- Not evaluated : Erdős problem #401: full solution with a Lean proof and solution to a variant problem according to the wiki (Aristotle, GPT-5.2 Pro)
- Not evaluated : Erdős problem #403: formalisation by AxiomProver (proof unspecified)
- Withdrawn : Erdős problem #411: proof judged incorrect by the wiki (Claude)
- Not evaluated : Erdős problem #415: partial result according to the wiki (GPT-5.4 Pro)
- Not evaluated : Erdős problem #418: formalisation by Aristotle, GPT (proof: Browkin and Schinzel (1995))
- Not evaluated : Erdős problem #419: formalisation by Aristotle (proof: Sawhney (2025))
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