On the Stability and Gelfand Property of Symmetric Pairs

On the Stability and Gelfand Property of Symmetric Pairs
复制标题

DOI:
--
复制
发表时间:
2015-11
期刊:
arXiv: Representation Theory
影响因子:
--
通讯作者:
Shachar Carmeli
Shachar Carmeli
中科院分区:
其他
文献类型:
--
作者:
Shachar Carmeli

文献摘要

被引文献

相似文献

一对对称的约化群$(G,H,\theta)$称为稳定的,如果$H$在$G$中的每一个闭双陪集都被反对合$g\mapsto \theta(g^{-1})$保持。在本文中,我们开发了一种方法来验证的稳定性对称对局部领域的特征0(阿基米德和$p$-adic),使用非阿贝尔群上同调。结合Aizenbud和Gourevitch的结果,我们将Gelfand对分类为对\开始{align*} &(SL_n(F),(GL_k(F)\times GL_{n-k}(F))\cap SL_n(F)),(U(B_1 \oplus B_2),U(B_1)\times U(B_2)),\\ &(GL_n(F),O(B)),(GL_n(F),U(B)),(GL_{2n}(F),GL_n(E)),(SL_{2n}(F),SL_n(E)),\end{align*}和对$(O(B_1 \oplus B_2),O(B_1)\times O(B_2))$在真实的情况下。
A symmetric pair of reductive groups $(G,H,\theta)$ is called stable, if every closed double coset of $H$ in $G$ is preserved by the anti-involution $g\mapsto \theta(g^{-1})$. In this paper, we develop a method to verify the stability of symmetric pairs over local fields of characteristic 0 (Archimedean and $p$-adic), using non-abelian group cohomology. Combining our method with results of Aizenbud and Gourevitch, we classify the Gelfand pairs among the pairs \begin{align*} &(SL_n(F), (GL_k(F) \times GL_{n - k}(F)) \cap SL_n(F)), (U(B_1 \oplus B_2),U(B_1) \times U(B_2)),\\ &(GL_n(F),O(B)), (GL_n(F),U(B)), (GL_{2n}(F), GL_n(E)),(SL_{2n}(F), SL_n(E)), \end{align*} and the pair $(O(B_1 \oplus B_2),O(B_1) \times O(B_2))$ in the real case.