中文

tempered表示K型重数的几何公式

微分几何 2018-05-08 v1 表示论

摘要

GG为具有紧中心的连通线性实约化李群。设K<GK<G为紧子群。在KK上满足一条件(特别地当KK为极大紧子群时成立)下,我们给出GG的任意tempered表示(事实上是任意标准表示)π\piKK型重数的几何表达。该表达秉承Kirillov轨道方法及量子化与约化交换原理的精神。它基于先前论文中获得的πK\pi|_K的几何实现。Paradan对离散序列获得了此表达,Duflo与Vergne对具有正则参数的tempered表示获得了此表达。我们得到了重数函数支撑的结论,以及适用于一般可容许表示的无重数限制准则。作为例子,我们证明了SU(p,1)\mathrm{SU}(p,1)SO0(p,1)\mathrm{SO}_0(p,1)SO0(2,2)\mathrm{SO}_0(2,2)的可容许表示对极大紧子群的限制是无重数的。

关键词

引用

@article{arxiv.1805.02297,
  title  = {A geometric formula for multiplicities of $K$-types of tempered representations},
  author = {Peter Hochs and Yanli Song and Shilin Yu},
  journal= {arXiv preprint arXiv:1805.02297},
  year   = {2018}
}

备注

48 pages. The initial version of preprint 1705.02088 was split into two parts; this is part 2. In the current version, applications to multiplicity-free restrictions were added. arXiv admin note: substantial text overlap with arXiv:1705.02088