On the Kazhdan-lusztig Basis of a Spherical Hecke Algebra
نویسنده
چکیده
Lusztig proved that the Kazhdan-Lusztig basis of a spherical algebra can be essentially identified with the Weyl characters of the Langlands dual group. We generalize this result to the unequal parameter case. Our new proof is simple and quite different from Lusztig’s.
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