# Eckmann–Hilton argument

> theorem that monoid objects in a category of monoids are necessarily commutative

**Wikidata**: [Q5332932](https://www.wikidata.org/wiki/Q5332932)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Eckmann–Hilton_argument)  
**Source**: https://4ort.xyz/entity/eckmann-hilton-argument