9 citations · 49 across the 59 of their papers we have counts for
5 papers · 1 filter
Positivity and divisibility of alternating descent polynomials
Zhicong Lin, Shi-Mei Ma, David G. L. Wang +1
The alternating descent statistic on permutations was introduced by Chebikin as a variant of the descent statistic. We show that the alternating descent polynomials on permutations…
Eulerian pairs and Eulerian recurrence systems
Shi-Mei Ma, Jun Ma, Jean Yeh +1
In this paper, we characterize a duality relation between Eulerian recurrences and Eulerian recurrence systems, which generalizes and unifies Hermite-Biehler decompositions of seve…
Infinite-dimensional Frobenius Manifolds Underlying the Universal Whitham Hierarchy
Shilin Ma, Chao-Zhong Wu, Dafeng Zuo
We construct a class of infinite-dimensional Frobenius manifolds on the spaces of pairs of meromorphic functions with a pole at infinity and a movable pole. Such Frobenius manifold…
The gamma-positivity of Eulerian polynomials and succession statistics
Shi-Mei Ma, Jun Ma, Jean Yeh +1
This paper is concerned with multivariate refinements of the gamma-positivity of Eulerian polynomials by using the succession and fixed point statistics. Properties of the enumerat…
The 1/k-Eulerian polynomials of type B
Shi-Mei Ma, Jun Ma, Jean Yeh +1
In this paper, we give a type B analogue of the 1/k-Eulerian polynomials. Properties of this kind of polynomials, including combinatorial interpretations, recurrence relations and…