arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1111.6215math.CO
收藏

联系系数生成级数的显式单项式展开式

Explicit monomial expansions of the generating series for connection coefficients

Ekaterina A. Vassilieva

摘要:

本文研究了对称群的群代数、类代数和双陪集代数的两个交换子代数的联络系数的生成级数的显式计算。如Hanlon,Stanley和Stembridge(1992)所示,这些序列给出了统计学家感兴趣的一些随机矩阵的谱分布。Morales和Vassilieva(2009,2011)通过在(局部)可定向曲面上的分块超映射和一些装饰的森林和树之间引入双射,找到了这些生成级数的单式对称函数的显式公式。借助于纯代数的方法,我们恢复了类代数的公式,并为双陪集代数提供了一个新的更简单的公式。作为一个突出的成分,我们得到了一个新的显式表达式分区索引的分区多项式类型[a,b,1 ^(n-a-b)]。

英文摘要:

This paper is devoted to the explicit computation of generating series for the connection coefficients of two commutative subalgebras of the group algebra of the symmetric group, the class algebra and the double coset algebra. As shown by Hanlon, Stanley and Stembridge (1992), these series gives the spectral distribution of some random matrices that are of interest to statisticians. Morales and Vassilieva (2009, 2011) found explicit formulas for these generating series in terms of monomial symmetric functions by introducing a bijection between partitioned hypermaps on (locally) orientable surfaces and some decorated forests and trees. Thanks to purely algebraic means, we recover the formula for the class algebra and provide a new simpler formula for the double coset algebra. As a salient ingredient, we derive a new explicit expression for zonal polynomials indexed by partitions of type [a,b,1^(n-a-b)].

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑