Abstract:In this paper, we define the Green functions for a resistance form by using effective resistance and harmonic functions. Then the Green functions and harmonic functions are shown to be uniformly Lipschitz continuous with respect to the resistance metric. Making use of this fact, we construct the Green operator and the (measure valued) Laplacian. The domain of the Laplacian is shown to be a subset of uniformly Lipschitz continuous functions while the domain of the resistance form in general consists of uniforml… Show more
“…In [Ki5], a work submitted after our paper was completed, Kigami proves some extensions of results from his book [Ki4] to a wider context which includes all the Dirichlet forms considered in this paper.…”
Section: Effective Resistance Metric Green's Function and Capacity Omentioning
We study not necessarily self-similar Dirichlet forms on the Sierpiński gasket that can be described as limits of compatible resistance networks on the sequence of graphs approximating the gasket. We describe the compatibility conditions in detail, and we also present an alternative description, based on just 3 conductance values and the 3-dimensional space of harmonic functions. In addition, we show how to parameterize all the Dirichlet forms by a set of independent variables.
“…In [Ki5], a work submitted after our paper was completed, Kigami proves some extensions of results from his book [Ki4] to a wider context which includes all the Dirichlet forms considered in this paper.…”
Section: Effective Resistance Metric Green's Function and Capacity Omentioning
We study not necessarily self-similar Dirichlet forms on the Sierpiński gasket that can be described as limits of compatible resistance networks on the sequence of graphs approximating the gasket. We describe the compatibility conditions in detail, and we also present an alternative description, based on just 3 conductance values and the 3-dimensional space of harmonic functions. In addition, we show how to parameterize all the Dirichlet forms by a set of independent variables.
“…The function ψξ is 0-harmonic, i.e. harmonic, so by Proposition 5.12. of [13] it is Lipschitz with respect to the resistance metric R(·, ·) on K. Therefore…”
Section: Harmonic Functions and Besov-lipschitz Spacesmentioning
confidence: 98%
“…In particular, one can prove that harmonic functions are Lipschitz with respect to the so-called resistance metric on fractals, see [13].…”
Abstract. R. S. Strichartz proposes a discrete definition of Besov spaces on self-similar fractals having a regular harmonic structure. In this paper, we characterize some of these Hölder-Zygmund and Besov-Lipschitz functions on nested fractals by means of the magnitude of the coefficients of the expansion of a function in a continuous piecewise harmonic base.
The purpose of this paper is to show that algorithms in a diverse set of applications may be cast in the context of relations on a finite set of operators in Hilbert space. The Cuntz relations for a finite set of isometries form a prototype of these relations. Such applications as entropy encoding, analysis of correlation matrices (Karhunen-Loève), fractional Brownian motion, and fractals more generally, admit multi-scales. In signal/image processing, this may be implemented with recursive algorithms using subdivisions of frequency-bands; and in fractals with scale similarity. In Karhunen-Loève analysis, we introduce a diagionalization procedure; and we show how the Hilbert space formulation offers a unifying approach; as well as suggesting new results.
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