# Mikhail Lyapunov

> Russian astronomer (1820–1868)

**Wikidata**: [Q4272733](https://www.wikidata.org/wiki/Q4272733)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mikhail_Lyapunov)  
**Source**: https://4ort.xyz/entity/mikhail-lyapunov