2 papers
math.CO2026
The -analogues of -positivity of Eulerian polynomials via group actions
Taifeng Ding, Lintong Wang, Sherry H. F. Yan
Han, Jouhet and Zeng established -analogues of the -expansion formulas for Eulerian polynomials of types and . Combinatorial interpretations of the corresponding coeff…
math.CO2026
On two conjectures concerning special kinds of descents on permutations
Taifeng Ding, Sherry H. F. Yan
In this paper, we prove the continued fraction conjecture posed by Han, Mao and Zeng for the generating function of permutations with respect to the number of descents of type …