Classification of coadjoint orbits for the maximal unipotent subgroup in the simple group of type F_4

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1. Verfasser: Surkov, Matvey A.
Format: Preprint
Veröffentlicht: 2025
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author Surkov, Matvey A.
author_facet Surkov, Matvey A.
contents Let N be the maximal unipotent subgroup in the simple algebraic group of type Φ. It naturally acts on the space dual to the Lie algebra n of N, and this action is called coadjoint. Such orbits play the key role in the orbit method of A.A. Kirillov. In this work, we classify the orbits of this action in the case of Φ = F_4 in terms of supports of canonical forms. This means that we will present a set S of linear forms such that for any coadjoint orbit there exists a unique form from S belonging to that orbit. The set of canonical forms will be explicitly described in terms of supports.
format Preprint
id arxiv_https___arxiv_org_abs_2504_19701
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Classification of coadjoint orbits for the maximal unipotent subgroup in the simple group of type F_4
Surkov, Matvey A.
Representation Theory
Let N be the maximal unipotent subgroup in the simple algebraic group of type Φ. It naturally acts on the space dual to the Lie algebra n of N, and this action is called coadjoint. Such orbits play the key role in the orbit method of A.A. Kirillov. In this work, we classify the orbits of this action in the case of Φ = F_4 in terms of supports of canonical forms. This means that we will present a set S of linear forms such that for any coadjoint orbit there exists a unique form from S belonging to that orbit. The set of canonical forms will be explicitly described in terms of supports.
title Classification of coadjoint orbits for the maximal unipotent subgroup in the simple group of type F_4
topic Representation Theory
url https://arxiv.org/abs/2504.19701