Qi Fang

activity

20212025

most citedAlternating Eulerian polynomials and left peak polynomials

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

collaborators

3 papers

math.QA2025

Sub-structure in module category of Virasoro vertex operator algebras $L (c_{p, q}, 0)$

Qirui Fang, Yu Teng, Yukun Xiao +1

We determine all premodular subcategories and modular tensor subcategories in the module categories of Virasoro vertex operator algebras $L (c_{p, q}, 0)$ and the module categories of…

math.CO2022

Alternating runs of permutations and the central factorial numbers

Qi Fang, Ya-Nan Feng, Shi-Mei Ma

Let R(n,k) be the number of permutations of ${1, 2, \dots, n}$ with k alternating runs. In this paper, we establish the relationships between R(n,k) and the central factorial numbe…

math.CO2021★ 2 cited

Alternating Eulerian polynomials and left peak polynomials

Shi-Mei Ma, Qi Fang, Toufik Mansour +1

In this paper we present grammatical interpretations of the alternating Eulerian polynomials of types A and B. As applications, we derive several properties of the type B alternati…

Sub-structure in module category of Virasoro vertex operator algebras L(cp,q​,0)

Alternating runs of permutations and the central factorial numbers

Alternating Eulerian polynomials and left peak polynomials

Sub-structure in module category of Virasoro vertex operator algebras $L (c_{p, q}, 0)$