# Birkhoff's theorem

> theorem that any spherically symmetric solution of the vacuum field equations must be static and asymptotically flat

**Wikidata**: [Q865665](https://www.wikidata.org/wiki/Q865665)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Birkhoff's_theorem_(relativity))  
**Source**: https://4ort.xyz/entity/birkhoff-s-theorem


## References

1. Freebase Data Dumps. 2013