# Littlewood–Paley theory

> theoretical framework in harmonic analysis

**Wikidata**: [Q6653183](https://www.wikidata.org/wiki/Q6653183)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Littlewood–Paley_theory)  
**Source**: https://4ort.xyz/entity/littlewood-paley-theory