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arXiv 2609.25717math.CO

$[k]\times P_{n,s}$ 上两个反链多项式的公共交织器

A common interleaver for two antichain polynomials on $[k]$$\times$ $P_{n,s}$

  • College of Science, Jiujiang University(九江学院理学院)
  • School of Mathematics, Foshan University(佛山大学数学学院)

机构由 AI 辅助整理,请以论文原文为准。

Jian Ding, Lingen Ding

AI总结:

本文通过将Jiang的方法推广到两行Ferrers形状,证明了关于反链生成多项式的猜想4.2,并利用实稳定性和Chudnovsky-Seymour准则构造公共交织器。

AI中文摘要:

第一作者与Dong \cite{DD} 提出了关于反链生成多项式的三个猜想。Jiang \cite{Jiang} 最近证明了猜想4.3和4.5,涉及实根性和\\(\gamma\\)-正性。我们通过将其方法从 \\([k]\times [2] \times [n]\\) 调整到 \\([k]\times P_{n,s} \\) 来证明猜想4.2,其中 \\(P_{n,s}\\) 是一个两行Ferrers形状。我们建立了与相邻形状相关的双变量多项式族的实稳定性,然后应用Chudnovsky-Seymour相容性准则获得一个公共交织器。如 \cite{DD} 所述,猜想4.2也蕴含猜想4.3。

英文摘要:

The first author and Dong \cite{DD} proposed three conjectures on antichain generating polynomials. Jiang \cite{Jiang} recently proved Conjectures 4.3 and 4.5, concerning real-rootedness and \(γ\)-positivity. We prove Conjecture 4.2 by adapting his method from \([k]\times [2] \times [n]\) to \([k]\times P_{n,s} \), where \(P_{n,s}\) is a two-row Ferrers shape. We establish real stability for a family of bivariate polynomials associated with adjacent shapes, then apply the Chudnovsky-Seymour compatibility criterion to obtain a common interleaver. As noted in \cite{DD}, Conjecture 4.2 also implies Conjecture 4.3.

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