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arXiv 0802.2347math-phmath.MPmath.OA
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离散Lapacian的谱理论

Spectral Theory for Discrete Lapacians

Dorin Ervin Dutkay, Palle E. T. Jorgensen

摘要:

给出了一类自伴离散图Laplacian $Δ$的谱表示,其中$Δ$依赖于所选的图$G$和定义在$G$的边上的电导函数$c$.我们证明了$Δ$的谱表示可以分为两类:(1)具有$N$ -adic分支律的树图,和(2)格图。我们表明,谱理论的第一类可以计算与使用秩一扰动的实部的单边移位,而第二个类似的是建立了使用的双边移位。我们进一步分析了电导函数$c$对谱的影响:$Δ$的谱表示如何依赖于$c$。使用$Δ_G$,我们引入了一个电阻度量,我们表明,它等距嵌入到能量希尔伯特空间。我们引入了一个相关的随机游走,我们计算返回概率,和一个路径计数。

英文摘要:

We give the spectral representation for a class of selfadjoint discrete graph Laplacians $Δ$, with $Δ$ depending on a chosen graph $G$ and a conductance function $c$ defined on the edges of $G$. We show that the spectral representations for $Δ$ fall in two model classes, (1) tree-graphs with $N$-adic branching laws, and (2) lattice graphs. We show that the spectral theory of the first class may be computed with the use of rank-one perturbations of the real part of the unilateral shift, while the second is analogously built up with the use of the bilateral shift. We further analyze the effect on spectra of the conductance function $c$: How the spectral representation of $Δ$ depends on $c$. Using $Δ_G$, we introduce a resistance metric, and we show that it embeds isometrically into an energy Hilbert space. We introduce an associated random walk and we calculate return probabilities, and a path counting number.

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。

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