# Schreier's lemma

> lemma about the generating set of a subgroup

**Wikidata**: [Q3229345](https://www.wikidata.org/wiki/Q3229345)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Schreier's_lemma)  
**Source**: https://4ort.xyz/entity/schreier-s-lemma