Stirling Permutations, Cycle Structure of Permutations and Perfect Matchings

Shi-Mei Ma, Yeong-Nan Yeh

Abstract


In this paper we provide constructive proofs that the following three statistics are equidistributed: the number of ascent plateaus of Stirling permutations of order $n$, a weighted variant of the number of excedances in permutations of length $n$ and the number of blocks with even maximal elements in perfect matchings of the set $\{1,2,3,\ldots,2n\}$.

Keywords


Stirling permutations; Excedances; Perfect matchings; Eulerian polynomials

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