# Jan Sommer

> Czech high school teacher and mathematician

**Wikidata**: [Q95456135](https://www.wikidata.org/wiki/Q95456135)  
**Source**: https://4ort.xyz/entity/jan-sommer


## References

1. Czech National Authority Database
2. Regional Database of the Central Bohemian Research Library in Kladno
3. [Collection of Registry Books at Prague City Archives](http://katalog.ahmp.cz/pragapublica/permalink?xid=041D4FEA9D194A31932973984AD66A5A&scan=68#scan68)
4. Virtual International Authority File