# parameterized post-Newtonian formalism

> classification system for different theories of gravity

**Wikidata**: [Q2621284](https://www.wikidata.org/wiki/Q2621284)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Parameterized_post-Newtonian_formalism)  
**Source**: https://4ort.xyz/entity/parameterized-post-newtonian-formalism


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)