# Dedekind-infinite set

> proper subset B of A that is equinumerous to A

**Wikidata**: [Q5249754](https://www.wikidata.org/wiki/Q5249754)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Dedekind-infinite_set)  
**Source**: https://4ort.xyz/entity/dedekind-infinite-set


## References

1. Freebase Data Dumps. 2013