# Denjoy–Young–Saks theorem

> mathematical theorem about Dini derivatives

**Wikidata**: [Q5257890](https://www.wikidata.org/wiki/Q5257890)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Denjoy–Young–Saks_theorem)  
**Source**: https://4ort.xyz/entity/denjoy-young-saks-theorem