Brenti's Open Problem on the Real-Rootedness of q-Eulerian Polynomials of Type D
Brenti's Open Problem on the Real-Rootedness of q-Eulerian Polynomials of Type D
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DOI:
10.1137/16m1084651
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发表时间:
2017-05
期刊:
影响因子:
--
通讯作者:
A. Yang;Philip B. Zhang
中科院分区:
文献类型:
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作者:
A. Yang;Philip B. Zhang
We prove that, for any positive $q$, the $q$-Eulerian polynomial of type $D$ has only real zeros. This settles an open problem of Brenti in 1994. For $q=1$, our result reduces to the real-rootedness of the Eulerian polynomials of type $D$, which was originally conjectured by Brenti and recently proved by Savage and Visontai.