Construction of central elements in the affine Hecke algebra via nearby cycles
Construction of central elements in the affine Hecke algebra via nearby cycles
复制标题
通过邻近周期构造仿射赫克代数的中心元素
DOI:
--
复制
发表时间:
1999
期刊:
影响因子:
--
通讯作者:
D. Gaitsgory
中科院分区:
文献类型:
--
作者:
D. Gaitsgory
0.1. Overview. Let G be a connected reductive group over a finite field Fq and let G(K) be the corresponding group over the local field K = Fq((t)). Let G(O) ⊂ G(K) be a maximal compact subgroup of G(K) (here O = Fq[[t]]) and let Hsph denote the Hecke algebra of G(K) with respect to G(O). In other words, Hsph as a vector space consists of compactly supported bi–G(O)–invariant functions G(K) → Q and the product is defined by