# sphere eversion

> topological operation of turning a sphere inside-out without creasing

**Wikidata**: [Q565198](https://www.wikidata.org/wiki/Q565198)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sphere_eversion)  
**Source**: https://4ort.xyz/entity/sphere-eversion


## References

1. Freebase Data Dumps. 2013