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math.CO2019
Further equidistribution of set-valued statistics on permutations
Jianxi Mao, Jiang Zeng
We construct bijections to show that two pairs of sextuple set-valued statistics of permutations are equidistributed on symmetric groups. This extends a recent result of Sokal and…
math.CO2019★ 1 cited
Eulerian polynomials and excedance statistics
Bin Han, Jianxi Mao, Jiang Zeng
A formula of Stembridge states that the permutation peak polynomials and descent polynomials are connected via a quadratique transformation. The aim of this paper is to establish t…