A Symmetric Function of Increasing Forests

A Symmetric Function of Increasing Forests
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森林增加的对称函数

DOI:
10.1017/fms.2021.33
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发表时间:
2020
期刊:
Forum of Mathematics, Sigma
影响因子:
--
通讯作者:
Antonio Nigro
Antonio Nigro
中科院分区:
--
文献类型:
--
作者:
Alex Abreu;Antonio Nigro

文献摘要

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相似文献

摘要对于无差异图G,我们定义了G的递增生成森林的对称函数,并证明了该对称函数满足一定的线性关系,这些线性关系也被色拟对称函数和单细胞$\textrm {LLT}$多项式所满足。因此,我们给出了$\textrm {LLT}$多项式在初等基上的系数的组合解释(直到$(q-1)$的幂次因子),加强了[4]中给出的描述。
Abstract For an indifference graph G, we define a symmetric function of increasing spanning forests of G. We prove that this symmetric function satisfies certain linear relations, which are also satisfied by the chromatic quasisymmetric function and unicellular $\textrm {LLT}$ polynomials. As a consequence, we give a combinatorial interpretation of the coefficients of the $\textrm {LLT}$ polynomial in the elementary basis (up to a factor of a power of $(q-1)$), strengthening the description given in [4].