Speaker：Huifang Yan（Zhejiang Normal University）

Time：2022-06-06, 15:00

Location：Tencent Meeting ID：9478414036（Pwd:260172）

Abstract:

In this talk, we will present some recent results on the enumerative polynomials of quasi-Stirling permutations of multisets with respect to the statistics of plateaux, descents and ascents, which generalizes several results obtained by Elizalde and solve two open problems posed by Elizalde. Moreover, we prove that the enumerative polynomials of quasi-Stirling permutations of multisets are partial gamma-positive, thereby confirming a recent conjecture posed by Lin, Ma and Zhang.