球簇的受限根与 Weyl 维数公式的受限形式
表示论
2012-09-14 v1 数学物理
math.MP
摘要
本文研究了一类半单群的球齐次空间(包括单连通对称空间)的受限根。对于这些空间,我们逐案详细描述了与该空间每个受限根相关联的群根集(受限根的嵌套)。作为一个应用,我们在球表示的情形下获得了 Weyl 维数公式的改进形式,将维数表示为不可约正受限根集上的乘积。
引用
@article{arxiv.1209.3002,
title = {Restricted Roots and Restricted Form of Weyl Dimension Formula for Spherical Varieties},
author = {Simon Gindikin and Roe Goodman},
journal= {arXiv preprint arXiv:1209.3002},
year = {2012}
}
备注
48 pages, 26 figures. This abridged version contains the main theorems and the statements of the propositions and lemmas (without proofs), together with the root nest calculations used to obtain the main theorems. The complete details are in the paper in Journal of Lie Theory