# ∈

> mathematical symbol signifying set membership

**Wikidata**: [Q2221333](https://www.wikidata.org/wiki/Q2221333)  
**Source**: https://4ort.xyz/entity/--q2221333


## References

1. [Source](http://jeff560.tripod.com/set.html)
2. Springer Science+Business Media. 2009
3. [Unicode 13.0. 2020](https://www.unicode.org/Public/13.0.0/ucd/NamesList.txt)
4. [Source](https://html.spec.whatwg.org/multipage/named-characters.html)
5. [Source](https://html.spec.whatwg.org/multipage/syntax.html#character-references)
6. [Source](https://www.unicode.org/Public/UCD/latest/ucd/NamesList.txt)