Lihong Yang

most citedPartial

γ

-Positivity for Quasi-Stirling Permutations of Multisets

1 citations · 2 across the 3 of their papers we have counts for

collaborators

3 papers

math.CO2022

On a conjecture concerning the shuffle-compatible permutation statistics

Lihong Yang, Sherry H. F. Yan

The notion of shuffle-compatible permutation statistics was implicit in Stanley's work on P-partitions and was first explicitly studied by Gessel and Zhuang. The aim of this paper…

math.CO2021★ 1 cited

Partial $γ$ -Positivity for Quasi-Stirling Permutations of Multisets

Sherry H. F. Yan, Yunwei Huang, Lihong Yang

We prove that the enumerative polynomials of quasi-Stirling permutations of multisets with respect to the statistics of plateaux, descents and ascents are partial $γ$ -positive, the…

math.CO2021★ 1 cited

Quasi-Stirling Permutations on Multisets

Sherry H. F. Yan, Lihong Yang, Yunwei Huang +1

A permutation $π$ of a multiset is said to be a {\em quasi-Stirling } permutation if there does not exist four indices $i < j < k < ℓ$ such that $π_{i} = π_{k}$ and $π_{j} = π_{ℓ}$ . Define $…

On a conjecture concerning the shuffle-compatible permutation statistics

Partial γ-Positivity for Quasi-Stirling Permutations of Multisets

Quasi-Stirling Permutations on Multisets

Partial $γ$ -Positivity for Quasi-Stirling Permutations of Multisets