# cofinal subset

> in order theory, a subset 𝑌 of a poset 𝑋 such that for any element of 𝑋, there exists an element of 𝑌 larger than it

**Wikidata**: [Q5141045](https://www.wikidata.org/wiki/Q5141045)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cofinal_(mathematics))  
**Source**: https://4ort.xyz/entity/cofinal-subset