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Published online by Cambridge University Press: 20 November 2018
Let Sn denote the permutation group on {1, 2, 3, …, n}. Let k ≥ 1 and n ≥ 1 be integers. For σ ∊ Sn we define ([1]) mk, n: Sn → Z by
Let pn ∊ Sn be the reverse permutation: that is,