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arXiv · 1307.7510

The twisted Satake isomorphism and Casselman-Shalika formula

Nadya Gurevich
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Abstract

For an arbitrary split adjoint group we identify the unramified Whittaker space with the space of skew-invariant functions on the lattice of coweights and deduce from it the Casselman-Shalika formula.

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Nadya Gurevich. 2013-08-01. The twisted Satake isomorphism and Casselman-Shalika formula. https://arxiv.org/abs/1307.7510

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