upper set
Fetched 2026-10-26 (cache).
Related words from Datamuse; suggestions, not definitions.
Noun
- {{lb|en|mathematics|order theory}} A subset of a [[poset]] which contains any ascending [[chain]] which starts at any element of itself.
Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.