# Ramsey cardinal

> cardinal 𝜅 such that, for any function 𝑓 from the set of finite subsets of 𝜅 to {0, 1}, there is a cardinality‐𝜅 set 𝐴 that is homogeneous for 𝑓

**Wikidata**: [Q255914](https://www.wikidata.org/wiki/Q255914)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ramsey_cardinal)  
**Source**: https://4ort.xyz/entity/ramsey-cardinal