May 26, 2026 Not evaluated

Erdős #90 also listed as solved by Claude Mythos

The gist

The wiki of AI contributions to Erdős problems lists a full resolution of problem #90 by Claude Mythos (Anthropic), dated May 26, 2026. Status not yet evaluated.

DiscoverIA status on October 11, 2026: not evaluated, meaning no third-party evaluation found.

Status detailsDetails

AI draft, not reviewedWhat has not been reviewed?

Text written by an AI (DiscoverIA pipeline), on Oct 13, 2026. 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.

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Cite this entry

A single status snapshot since Oct 11, 2026: a citation always points to a dated snapshot.

Cite snapshot 1, Oct 11, 2026

APA citation with the dated link

DiscoverIA. (2026, October 11). Erdős #90 also listed as solved by Claude Mythos [Status: Not evaluated, snapshot 1]. DiscoverIA registry. https://discoveria.ai/entry/erdos-90-claude-mythos#releve-1

BibTeX @misc, key discoveria-erdos-90-claude-mythos-r1

@misc{discoveria-erdos-90-claude-mythos-r1,
  author       = {{DiscoverIA}},
  title        = {Erdős #90 also listed as solved by Claude Mythos},
  howpublished = {DiscoverIA registry, entry erdos-90-claude-mythos},
  note         = {Status “Not evaluated”, snapshot 1, recorded on October 11, 2026. New result},
  year         = {2026},
  url          = {https://discoveria.ai/entry/erdos-90-claude-mythos#releve-1},
  urldate      = {2026-10-11}
}

Dated link opens this snapshot in the history

https://discoveria.ai/entry/erdos-90-claude-mythos#releve-1

To understand ≈ 20 s reading time, estimated

What it changes

If this resolution holds, an Anthropic model would have handled a discrete geometry question posed by Erdős. For now it is mainly an entry in a public record, not a checked result.

What remains unclear

The evidence cited is the wiki entry (status “full resolution”) and no verifier is named. The detail of the line was only read through a page-reading tool, and the record does not say exactly what the resolution establishes.

For experts

Sources, method, key facts, status history, report an error

Status

Not evaluated

Recorded on Oct 11, 2026 · github.com

Step 1 of 4 on the scale: not evaluated. Next step: under review.

May 26, 2026Announced
Oct 11, 2026Recordednot evaluated
nextTo follow

What this status means

Source reading : Source read through an AI summary (level 2 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.

Full history

Proofs: entrée du wiki (statut 'full resolution')

Sources

Main sourcegithub.compage read through an AI summary

Method

DiscoverIA status: not evaluated, meaning that no third-party evaluation has been found in the sources read. Set on October 11, 2026 from github.com (page read through a model summary, quotation not rechecked).

Limits

The status source was read through a model summary; its quotation was not rechecked. DiscoverIA has not checked this result itself.

Key facts

Claimed by: Anthropic (Claude Mythos), according to the AI-Erdős wiki
announced on May 26, 2026
Nature: new result
Field: Mathematics (discrete geometry)
Checked by: no verifier identified
Sources: 1 : 1 through an AI summary
This entry: AI draft, not reviewed

Status history

Only one observation so far.

01Oct 11, 2026
First observation:Not evaluatedCurrent status
Source: github.comread through an AI summary

An observation is added; none is ever erased.

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