# Jensen's inequality

> English word · Proper noun

## Definitions
1. An inequality that relates the value of a convex function of an integral to the integral of the convex function.

## Etymology
Named after Johan Jensen, the Danish mathematician who proved it in 1906.

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