# Tonelli's theorem

> English word · Proper noun

## Definitions
1. A fundamental result on the weak lower semicontinuity of nonlinear functionals on Lᵖ spaces.
2. A successor of Fubini's theorem.

## Etymology
Named after the Italian mathematician Leonida Tonelli.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tonelli-s-theorem