Athena problem: Difference between revisions - Wikiversity
Athena problem is an unsolved problem in number theory and formal language theory and order theory, this problem is named after the ancient Greek goddess Athena (which is associated with wisdom). For example, 514 is a subsequence of 352148, "string" is a subsequence of "meistersinger". For bases 2 ≤ b ≤ 36, Athena problem is fully solved in bases b = 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 24, and also solved in bases b = 11, 13, 16, 22, 30 if probable primes are allowed.
- ▪Athena problem is an unsolved problem in number theory and formal language theory and order theory, this problem is named after the ancient Greek goddess Athena (which is associated with wisdom).
- ▪For example, 514 is a subsequence of 352148, "string" is a subsequence of "meistersinger".
- ▪For bases 2 ≤ b ≤ 36, Athena problem is fully solved in bases b = 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 24, and also solved in bases b = 11, 13, 16, 22, 30 if probable primes are allowed.
archive.vn files mainly under news. We currently carry 62 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | archive.vn |
| Canonical URL | http://archive.vn/o7NE6 |
| Publication time | Fri, 24 Jul 2026 13:50:25 GMT |
| Retrieval time | 2026-07-24T13:52:39.305Z |
| Last seen | 2026-07-24T13:52:45.358Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | yT3EATBID2Qd · 3 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Toggle the table of contents Contents move to sidebar hide Beginning 1 Solve the problem 2 Data 3 The fully proof of Athena problem in decimal (base b = 10) Athena problem: Difference between revisions Add languages Add links Resource Discuss English Read Edit Edit source View history Tools Tools move to sidebar hide Actions Read Edit Edit source View history General What links hereRelated changesPermanent linkPage informationCite this pageGet shortened URL Add interlanguage links Wikimedia Projects CommonsWikibooksWikidataWikipediaWikiquoteWikisourceWikispeciesWikivoyageWiktionaryMeta-WikiOutreachMediaWikiWikimania Print/export Create a bookPrintable version In other projects Wikidata item Help From Wikiversity Browse history interactively← Older editNewer edit…
Excerpt limited to ~120 words for fair-use compliance. The full article is at archive.vn.
Discussion
0 commentsMore from archive.vn
![We Tested 20 Pairs to Find the Best Flat-Back Earrings [2026]](/img-proxy?url=https%3A%2F%2Farchive.vn%2FLdq0Y%2F2ba2055c290cfed2a2fc5afe70e3731c9c5f98e5%2Fscr.png&w=320)
