# axiom of countability

> property of certain mathematical objects (usually in a category) that asserts the existence of a countable set with certain properties. Without such an axiom, such a set might not probably exist.

**Wikidata**: [Q336779](https://www.wikidata.org/wiki/Q336779)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Axiom_of_countability)  
**Source**: https://4ort.xyz/entity/axiom-of-countability


## References

1. Freebase Data Dumps. 2013