# mathematical constant

> special, usually real number, that is interesting or significant in some way

**Wikidata**: [Q186509](https://www.wikidata.org/wiki/Q186509)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mathematical_constant)  
**Source**: https://4ort.xyz/entity/mathematical-constant


## References

1. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=36756)
2. Nuovo soggettario
3. National Library of Israel