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Boundary behaviour of $$\lambda $$λ -polyharmonic functions on regular trees
Annali di Matematica Pura ed Applicata ( IF 1.0 ) Pub Date : 2020-04-29 , DOI: 10.1007/s10231-020-00981-8
Ecaterina Sava-Huss 1 , Wolfgang Woess 2
Affiliation  

This paper studies the boundary behaviour of \(\lambda \)-polyharmonic functions for the simple random walk operator on a regular tree, where \(\lambda \) is complex and \(|\lambda |> \rho \), the \(\ell ^2\)-spectral radius of the random walk. In particular, subject to normalisation by spherical, resp. polyspherical functions, Dirichlet and Riquier problems at infinity are solved, and a non-tangential Fatou theorem is proved.



中文翻译:


$$\lambda $$λ - 正则树上的多调和函数的边界行为



本文研究了正则树上简单随机游走算子的\(\lambda \)多调和函数的边界行为,其中\(\lambda \)是复数且\(|\lambda |> \rho \) ,随机游走的\(\ell ^2\)谱半径。特别是,分别通过球面进行归一化。解决了无穷远的多球函数、Dirichlet 和 Riquier 问题,并证明了非切线 Fatou 定理。

更新日期:2020-04-29
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