Nilpotent subspaces of maximal dimension in semisimple Lie algebras

J. Draisma, H. Kraft, J. Kuttler

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)

Abstract

We show that a linear subspace of a reductive Lie algebra $\operatorname{\mathfrak g}$ that consists of nilpotent elements has dimension at most $\frac{1}{2}(\dim\operatorname{\mathfrak g}-\operatorname{rk}\operatorname{\mathfrak g})$, and that any nilpotent subspace attaining this upper bound is equal to the nilradical of a Borel subalgebra of $\operatorname{\mathfrak g}$. This generalizes a classical theorem of Gerstenhaber, which states this fact for the algebra of $(n\times n)$-matrices.
Original languageEnglish
Pages (from-to)464-476
JournalCompositio Mathematica
Volume142
Issue number2
DOIs
Publication statusPublished - 2006

Fingerprint

Dive into the research topics of 'Nilpotent subspaces of maximal dimension in semisimple Lie algebras'. Together they form a unique fingerprint.

Cite this