# Friedmann equations

> set of ordinary differential equations governing cosmic expansion in a homogeneous and isotropic universe

**Wikidata**: [Q467736](https://www.wikidata.org/wiki/Q467736)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Friedmann_equations)  
**Source**: https://4ort.xyz/entity/friedmann-equations


## References

1. [Source](https://lingualibre.org/wiki/Q788029)
2. Freebase Data Dumps. 2013
3. Quora
4. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)