# countably infinite set

> set with the same cardinality as the set of natural numbers

**Wikidata**: [Q185478](https://www.wikidata.org/wiki/Q185478)  
**Source**: https://4ort.xyz/entity/countably-infinite-set


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)