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The γ-positive coefficients arising in segmented permutations
Discrete Mathematics ( IF 0.7 ) Pub Date : 2021-02-22 , DOI: 10.1016/j.disc.2021.112336 Bin Han
中文翻译:
这 分段排列中出现的正系数
更新日期:2021-02-22
Discrete Mathematics ( IF 0.7 ) Pub Date : 2021-02-22 , DOI: 10.1016/j.disc.2021.112336 Bin Han
The -coefficients of Eulerian polynomials were first considered by Foata and Schützenberger. In this paper, we provide combinatorial interpretations for the -coefficients arising from the segmented permutations and segmented derangements via Brändén’s modified Foata–Strehl action. We also give the combinatorial interpretations of -coefficients for the -avoiding inversion sequences via continued fractions.
中文翻译:
这 分段排列中出现的正系数
这 Foata和Schützenberger首先考虑了欧拉多项式的-系数。在本文中,我们为-coefficients从产生分段排列和分段紊乱通过布兰登的修改Foata-斯切尔行动。我们还给出了的组合解释-的系数 -通过连续分数避免反演序列。