# Casorati–Weierstrass theorem

> in complex analysis, the theorem that a holomorphic function arbitrarily close to any complex value in every neighborhood of an essential singularity

**Wikidata**: [Q2226962](https://www.wikidata.org/wiki/Q2226962)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Casorati–Weierstrass_theorem)  
**Source**: https://4ort.xyz/entity/casorati-weierstrass-theorem


## References

1. Freebase Data Dumps. 2013