Weak L^p bounds on all integer powers of the Laplacian on a homogeneous tree force the function to be a Laplacian eigenfunction.
Analysis of $L^p$-type estimates of Poisson transform on Homogeneous Trees
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abstract
In this article we prove the restriction theorem for Helgason-Fourier transform on homogeneous tree. Our proof is based on the duality argument and the norm estimates of Poisson transform. We also characterize all eigenfunctions of the laplacian on homogeneous tree which are Poisson transform of $L^p$ functions defined on the boundary.
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2019 1verdicts
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A Theorem of Roe and Strichartz on homogeneous trees
Weak L^p bounds on all integer powers of the Laplacian on a homogeneous tree force the function to be a Laplacian eigenfunction.