# Cartan subalgebra

> English word · Noun

## Definitions
1. A certain kind of nilpotent subalgebra of a Lie algebra.

## Etymology
Introduced by Élie Cartan in his doctoral thesis.

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