Jiang Zeng

activity

20182026

collaborators

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2 papers · 1 filter

math.CO2024

Gamma positivity of variations of $(α, t)$ -Eulerian polynomials

Chao Xu, Jiang Zeng

In 1977 Carlitz and Scoville introduced the cycle $(α, t)$ -Eulerian polynomials $A_{n}^{cyc} (x, y, t ∣ α)$ by enumerating permutations with respect to the number of excedanc…

math.CO2024

Mahonian-Stirling statistics for partial permutations

Ming-Jian Ding, Jiang Zeng

Recently Cheng et al. (Adv. in Appl. Math. 143 (2023) 102451) generalized the inversion number to partial permutations, which are also known as Laguerre digraphs, and asked for a s…

Gamma positivity of variations of (α,t)-Eulerian polynomials

Mahonian-Stirling statistics for partial permutations

Gamma positivity of variations of $(α, t)$ -Eulerian polynomials