The Jordan-Hölder series for nearby cycles on some Shimura varieties and affine flag varieties
The Jordan-Hölder series for nearby cycles on some Shimura varieties and affine flag varieties
复制标题
Jordan-Hölder 系列用于一些 Shimura 品种和仿射旗品种的附近周期
DOI:
10.1515/crelle.2007.063
复制
发表时间:
2004
影响因子:
1.9
通讯作者:
T. Haines
中科院分区:
文献类型:
--
作者:
Ulrich Goertz;T. Haines
Abstract We study the Jordan-Hölder series for nearby cycles on certain Shimura varieties and Rapoport-Zink local models, and on finite-dimensional pieces of Beilinson's deformation of the affine Grassmannian to the affine flag variety (and their p-adic analogues). We give a formula for the multiplicities of irreducible constituents in terms of certain cohomology groups, and we also provide an algorithm to compute multiplicities, in terms of the affine Hecke algebra.