# logarithm

> inverse of the exponential function, which maps products to sums

**Wikidata**: [Q11197](https://www.wikidata.org/wiki/Q11197)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Logarithm)  
**Source**: https://4ort.xyz/entity/logarithm


## References

1. [Calculus and Analytic Geometry. Addison-Wesley. 1979](https://archive.org/details/isbn_020175407)
2. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
3. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=21688)
4. Nuovo soggettario
5. Freebase Data Dumps. 2013
6. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip)
7. YSO-Wikidata mapping project
8. National Library of Israel
9. KBpedia
10. GF WordNet
11. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)