The twisted Satake isomorphism and Casselman-Shalika formula
Nadya Gurevich
所有作者
Nadya Gurevich
文献摘要
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.