Major Indices and Perfect Bases for Complex Reflection Groups

Robert Shwartz, Ron M. Adin, Yuval Roichman


It is shown that, under mild conditions, a complex reflection group $G(r,p,n)$ may be decomposed into a set-wise direct product of cyclic subgroups. This property is then used to extend the notion of major index and a corresponding Hilbert series identity to these and other closely related groups.

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