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Journal of Functional Analysis
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Distributions of Localized Eigenvalues of Laplacians on Post Critically Finite Self-Similar Sets

Distributions of localized eigenvalues of Laplacians on post critically finite self-similar sets
Authors: Kigami, Jun;

Distributions of Localized Eigenvalues of Laplacians on Post Critically Finite Self-Similar Sets

Abstract

The author roughly considers the class of finitely ramified fractals. Assume that such a fractal \(K\) carries a fractal Laplacian \(\Delta\) with a domain \({\mathcal D}_\mu\subset C(K) \subset L^2(K,\mu)\), where \(\mu\) is a finite Borel measure with support \(K\). The so-called post critical set is a natural boundary of \(K\). Under Dirichlet boundary conditions an eigenfunction of \(\Delta\) is called localized if its support is contained in the interior of \(K\). The classical Laplacian on a ball of \(\mathbb{R}^d\) does not have such eigenfunctions but many connected fractals do. The eigenvalue counting function \(\rho(\lambda)\) of \(\Delta\) is decomposed into the sum of a function \(\rho^W(\lambda)\) counting the eigenvalues of localized eigenfunctions and \(\rho^F(\lambda)\) counting the global ones. For \(\lambda \to \infty\) it is shown that \(\rho^W(\lambda)\) asymptotically equals \(\lambda^{d_S/2}\), where \(d_S\) is the spectral dimension of \(K\). On the other hand, some fractals have the asymptotic \(\rho^F(\lambda) \approx \lambda^\beta\) for some \(0<\beta

Keywords

Probabilistic potential theory, post critical set, Fractals, Laplace operator, Asymptotic distributions of eigenvalues in context of PDEs, finitely ramified fractals, localized eigenfunction, eigenvalue counting function, fractal Laplacian, Analysis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
18
Average
Top 10%
Top 10%
hybrid