# Zorn's lemma

> statement equivalent to the axiom of choice, about the existence of a maximal element in a poset with a maximal chain condition

**Wikidata**: [Q290810](https://www.wikidata.org/wiki/Q290810)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Zorn's_lemma)  
**Source**: https://4ort.xyz/entity/zorn-s-lemma


## References

1. Freebase Data Dumps. 2013