Jordan–Chevalley decomposition
In mathematics, specifically linear algebra, the Jordan–Chevalley decomposition, named after Camille Jordan and Claude Chevalley, expresses a linear operator in a unique way as the sum of two other linear operators which are simpler to understand. Specifically, one part is potentially diagonalisable and the other is nilpotent.
Source: Wikipedia — Jordan–Chevalley decomposition (CC BY-SA 4.0)