A q-analogue of an identity of N. Wallach
G. Lusztig
Abstract
N.Wallach has considered an element of the group algebra of the symmetric group Sn which is the sum of an n-cycle, an (n-1)-cycle,...,a 2-cycle and the identity. He showed that multiplication by this element has eigenvalues 0,1,2,...,n-2,n. We prove a q-analogue of this result in which the group algebra of Sn is replaced by the corresponding Hecke algebra.
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