开轨道与 Dynkin 图的增广
表示论
2009-03-08 v3 微分几何
摘要
给定复线性约化李群 的任意表示 ,我们证明了具有 的更大半单李群 存在,当且仅当 具有有限个 -轨道。特别地, 容许一个开 -轨道。此外,这对应于 的 Dynkin 图的增广。 的表示理论应有助于描述 Hitchin 所研究的具有稳定形式的流形的几何。
引用
@article{arxiv.0812.1078,
title = {Open Orbits and Augmentations of Dynkin Diagrams},
author = {Sin Tsun Edward Fan and Naichung Conan Leung},
journal= {arXiv preprint arXiv:0812.1078},
year = {2009}
}
备注
After the first version was posted, we were informed that many of the results in it were obtained earlier by Kac, Rubenthaler and Vinberg. See Remark 1 for more details