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{\bf T. Kyle Petersen and Luis Serrano}
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{\bf Cyclic Sieving for Longest Reduced Words in the Hyperoctahedral Group}
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We show that the set $R(w_0)$ of reduced expressions for the longest
element in the hyperoctahedral group exhibits the cyclic sieving
phenomenon. More specifically, $R(w_0)$ possesses a natural cyclic
action given by moving the first letter of a word to the end, and we
show that the orbit structure of this action is encoded by the
generating function for the major index on~$R(w_0)$.

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