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arXiv math/0404408math.RT
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关于GL(n,O)的几种几何表示

On some geometric representations of GL(n,O)

Uri Bader, Uri Onn

摘要:

研究群GL(n,O)的一族复表示,其中O是非阿基米德局部域F的整数环.这些表示出现在GL(n,F)的格拉斯曼表示到其极大紧子群GL(n,O)的限制中。我们明确计算的转移阵之间的几何基础的Hecke代数与表示和代数基础,其中包括其最小幂等元。转移阵涉及有限O-模的子模格的组合不变量。幂等元是多变量雅可比多项式的p-adic类似物。

英文摘要:

We study a family of complex representations of the group GL(n,O), where O is the ring of integers of a non-archimedean local field F. These representations occur in the restriction of the Grassmann representation of GL(n,F) to its maximal compact subgroup GL(n,O). We compute explicitly the transition matrix between a geometric basis of the Hecke algebra associated with the representation and an algebraic basis which consists of its minimal idempotents. The transition matrix involves combinatorial invariants of lattices of submodules of finite O-modules. The idempotents are p-adic analogs of the multivariable Jacobi polynomials.

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