Source: wikibot/calderon-zygmund-lemma
= Calderón–Zygmund lemma
{wiki=Calderón–Zygmund_lemma}
The Calderón–Zygmund lemma is a fundamental result in the theory of singular integrals and is often used in various areas of analysis, including harmonic analysis and partial differential equations. It is named after the mathematicians Alberto Calderón and Anton Zygmund, who made significant contributions to the field.