# axiom of union

> axiom stating that for any set x there is a set y whose elements are precisely the elements of the elements of x

**Wikidata**: [Q1987722](https://www.wikidata.org/wiki/Q1987722)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Axiom_of_union)  
**Source**: https://4ort.xyz/entity/axiom-of-union


## References

1. Freebase Data Dumps. 2013