On uniqueness of submaximally symmetric parabolic geometries

Fuente: arXiv
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Main Author: The, Dennis
Format: Preprint
Published: 2021
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author The, Dennis
author_facet The, Dennis
contents Among (regular, normal) parabolic geometries of type $(G,P)$, there is a locally unique maximally symmetric structure and it has symmetry dimension $\dim(G)$. The symmetry gap problem concerns the determination of the next realizable (submaximal) symmetry dimension. When $G$ is a complex or split-real simple Lie group of rank at least three or when $(G,P) = (G_2,P_2)$, we establish a local uniqueness result for submaximally symmetric structures of type $(G,P)$.
format Preprint
id arxiv_https___arxiv_org_abs_2107_10500
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle On uniqueness of submaximally symmetric parabolic geometries
The, Dennis
Differential Geometry
Primary 58J70, Secondary 53B99, 22E46, 17B70
Among (regular, normal) parabolic geometries of type $(G,P)$, there is a locally unique maximally symmetric structure and it has symmetry dimension $\dim(G)$. The symmetry gap problem concerns the determination of the next realizable (submaximal) symmetry dimension. When $G$ is a complex or split-real simple Lie group of rank at least three or when $(G,P) = (G_2,P_2)$, we establish a local uniqueness result for submaximally symmetric structures of type $(G,P)$.
title On uniqueness of submaximally symmetric parabolic geometries
topic Differential Geometry
Primary 58J70, Secondary 53B99, 22E46, 17B70
url https://arxiv.org/abs/2107.10500