arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv math/0510538math.RTmath.AG
收藏

二维局部域上Hecke代数的几个例子

Some examples of Hecke algebras over 2-dimensional local fields

Alexander Braverman, David Kazhdan

摘要:

设K是局部非阿基米德域,F=K((t)),G是可裂半单群.本文的目的是研究球面(和岩堀)Hecke代数的某些类似物,它们表示群G(F)及其中心扩张。例如,我们的球面Hecke代数对应于子群G(A),其中A是子环$\calO_K((t))$,其中$\calO_K\subset K$是整数环。事实证明,对于一般水平的球面Hecke代数是平凡的,然而,在临界水平上,它是相当大的。另一方面,我们期望相应的岩堀-赫克代数的大小不依赖于水平的选择(细节将在另一个出版物中考虑)。

英文摘要:

Let K be a local non-archimedian field, F=K((t)) and let G be a split semi-simple group. The purpose of this paper is to study certain analogs of spherical (and Iwahori) Hecke algebras for representations of the group G(F) and its central extension by means of K*. For instance our spherical Hecke algebra corresponds to the subgroup G(A) where A is the subring $\calO_K((t))$ where $\calO_K\subset K$ is the ring of integers. It turns out that for generic level the spherical Hecke algebra is trivial; however, on the critical level it is quite large. On the other hand we expect that the size of the corresponding Iwahori-Hecke algebra does not depend on a choice of a level (details will be considered in another publication).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑