# principle of excluded middle

> logical principle stating that for every proposition, either it or its negation is true

**Wikidata**: [Q468422](https://www.wikidata.org/wiki/Q468422)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Law_of_excluded_middle)  
**Source**: https://4ort.xyz/entity/principle-of-excluded-middle


## References

1. [Integrated Authority File](http://d-nb.info/gnd/G)
2. Integrated Authority File
3. IdRef
4. Freebase Data Dumps. 2013
5. Quora
6. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)