Decomposition of double cosets in p-adic groups
Decomposition of double cosets in p-adic groups
复制标题
p-进群中双陪集的分解
DOI:
10.2140/pjm.2001.197.97
复制
发表时间:
2001
影响因子:
0.6
通讯作者:
Joshua M. Lansky
中科院分区:
文献类型:
--
作者:
Joshua M. Lansky
Let G be a split group over a locally compact field F with non-trivial discrete valuation. Employing the structure theory of such groups and the theory of Coxeter groups, we obtain a general formula for the decomposition of double cosets P1σP2 of subgroups P1, P2 ⊂ G(F ) containing an Iwahori subgroup into left cosets of P2. When P1 and P2 are the same hyperspecial subgroup, we use this result to derive a formula of Iwahori for the degrees of elements of the spherical Hecke algebra.