# open mapping theorem

> Theorem that holomorphic functions on complex domains are open maps

**Wikidata**: [Q967972](https://www.wikidata.org/wiki/Q967972)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Open_mapping_theorem_(complex_analysis))  
**Source**: https://4ort.xyz/entity/open-mapping-theorem-q967972