On the Real-Rootedness of the Descent Polynomials of $(n-2)$-Stack Sortable Permutations

Electronic Journal Of Combinatorics

Philip B. Zhang¹ 

关键词: Eulerian polynomials;    descent polynomials;    $t$-stack sortable permutations;    real-rootedness;    interlacing;    compatibility.;   

DOI  :  

学科分类：离散数学和组合数学

来源: Electronic Journal Of Combinatorics

【 摘 要 】

Bóna conjectured that the descent polynomials on $(n-2)$-stack sortable permutations have only real zeros. Brändén proved this conjecture by establishing a more general result. In this paper, we give another proof of Brändén's result by using the the

【 授权许可】

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