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arXiv 1006.4872math.PRmath.CO
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马尔可夫链的广义峰积

Generalized crested products of Markov chains

Daniele D'Angeli, Alfredo Donno

摘要:

我们定义了一个有限马尔可夫链,称为广义峰积,它自然地表现为马尔可夫链的第一峰积的推广。给出了完整的谱分析和$k$阶跃转移概率。值得注意的是,这个马尔可夫链描述的是经典的埃克塞特扩散模型的一个更一般的版本。作为一种特殊情况,得到了超度量空间上经典昆虫马尔可夫链的推广。最后,通过证明广义冠积的谱分解与置换群的广义圈积的Gelfand对之间的对应关系,给出了表示群论的解释.

英文摘要:

We define a finite Markov chain, called generalized crested product, which naturally appears as a generalization of the first crested product of Markov chains. A complete spectral analysis is developed and the $k$-step transition probability is given. It is important to remark that this Markov chain describes a more general version of the classical Ehrenfest diffusion model. As a particular case, one gets a generalization of the classical Insect Markov chain defined on the ultrametric space. Finally, an interpretation in terms of representation group theory is given, by showing the correspondence between the spectral decomposition of the generalized crested product and the Gelfand pairs associated with the generalized wreath product of permutation groups.

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