Abstract
Let i=1+q+⋅⋅⋅+q i−1. For certain sequences (r 1,…,r l ) of positive integers, we show that in the Hecke algebra ℋ n (q) of the symmetric group \(\mathfrak{S}_{n}\) , the product \((1+\boldsymbol{r}_{\boldsymbol{1}}T_{r_{1}})\cdots (1+\boldsymbol{r}_{\boldsymbol{l}}T_{r_{l}})\) has a simple explicit expansion in terms of the standard basis {T w }. An interpretation is given in terms of random walks on \(\mathfrak{S}_{n}\) .
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