# Ludwig Hopf

> German physicist (1884–1939)

**Wikidata**: [Q92426](https://www.wikidata.org/wiki/Q92426)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ludwig_Hopf)  
**Source**: https://4ort.xyz/entity/ludwig-hopf


## References

1. Integrated Authority File
2. Mathematics Genealogy Project
3. Virtual International Authority File
4. Discogs
5. SNAC
6. Freebase Data Dumps. 2013
7. [Source](https://books.google.cat/books?id=6GuYDwAAQBAJ)
8. National Library of Israel Names and Subjects Authority File
9. Catalogo of the National Library of India