Hua Sun

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20152023

most citedPolynomials with palindromic and unimodal coefficients

8 citations · 25 across the 14 of their papers we have counts for

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math.CO2018★ 3 cited

A new class of refined Eulerian polynomials

Hua Sun

In this note we introduce a new class of refined Eulerian polynomials defined by $A_{n} (p, q) = π \in S_{n} \sum p^{odes (π)} q^{edes (π)},$ where $odes (π)$ and…

math.CO2016★ 8 cited

Polynomials with palindromic and unimodal coefficients

Hua Sun, Yi Wang, Hai-Xia Zhang

Let $f (q) = a_{r} q^{r} + \dots + a_{s} q^{s}$ , with $a_{r} \neq = 0$ and $a_{s} \neq = 0$ , be a real polynomial. It is a palindromic polynomial of darga $n$ if $r + s = n$ and $a_{r + i} = a_{s - i}$ for all $i$ . P…