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Unramified Whittaker functions on p-adic loop groups
- American Journal of Mathematics
- Johns Hopkins University Press
- Volume 139, Number 1, February 2017
- pp. 175-213
- 10.1353/ajm.2017.0003
- Article
- Additional Information
We define unramified Whittaker functions on the $p$-adic points of an affine Kac-Moody group, and establish an analogue of the Casselman-Shalika formula for these functions.