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This paper extends the Hodge-de Rham theory of Aaron \textit{et al.} [Commun. Pure Appl. Anal. {\bf 13} (2014)] to higher-dimensional level-$l$ Sierpinski gaskets $SG_{\ell}^{n},$ providing a framework for analyzing differential forms and…

Differential Geometry · Mathematics 2025-08-19 Sze-Man Ngai , Shui-Hong Zhou

We study the pointwise regularity of energy densities associated with harmonic functions on the $N$-dimensional Sierpinski gasket $(N\ge 2)$ with respect to the Kusuoka measure. For any nonconstant harmonic function, we prove that every…

Analysis of PDEs · Mathematics 2026-05-26 Masanori Hino , Kanji Inui , Kohei Nitta

We extend and survey results in the theory of analysis on fractal sets from the standard Laplacian on the Sierpi\'nski gasket to the energy Laplacian, which is defined weakly by using the Kusuoka energy measure. We also extend results from…

Analysis of PDEs · Mathematics 2017-10-24 Anders Öberg , Konstantinos Tsougkas

We use spectral decimation to provide formulae for computing the harmonic gradients of Laplacian eigenfunctions on the Sierpinski Gasket. These formulae are given in terms of special functions that are defined as infinite products.

Classical Analysis and ODEs · Mathematics 2007-11-15 Jessica L. DeGrado , Luke G. Rogers , Robert S. Strichartz

P. Alonso-Ruiz, U. Freiberg and J. Kigami have defined a large family of resistance forms on the Stretched Sierpinski Gasket $G$. In the present paper we introduce a system of coordinates on $G$ (technically, an embedding of $G$ into…

Metric Geometry · Mathematics 2023-10-23 Ugo Bessi

In this paper, we establish an analogue of the classical mean value property for both the harmonic functions and some general functions in the domain of the Laplacian on the Sierpinski gasket. Furthermore, we extend the result to some other…

Classical Analysis and ODEs · Mathematics 2013-05-17 Hua Qiu , Robert S. Strichartz

We confirm, in a more general framework, a part of the conjecture posed by R. Bell, C.-W. Ho, and R. S. Strichartz [Energy measures of harmonic functions on the Sierpi\'nski gasket, Indiana Univ. Math. J. 63 (2014), 831--868] on the…

Probability · Mathematics 2016-09-27 Masanori Hino

We construct a self-similar local regular Dirichlet form on the Sierpi\'nski gasket using $\Gamma$-convergence of stable-like non-local closed forms. As a continuation of a recent paper by Grigor'yan and the author, we give the first…

Functional Analysis · Mathematics 2019-07-09 Meng Yang

On the Sierpinski gasket $\mathcal{SG}$, we consider Sobolev spaces $L^2_\sigma(\mathcal{SG})$ associated with the standard Laplacian $\Delta$ with order $\sigma\geq 0$. When $\sigma\in\mathbb{Z}^+$, $L^2_\sigma(\mathcal{SG})$ consists of…

Functional Analysis · Mathematics 2020-02-19 Shiping Cao , Hua Qiu

We study energy measures of canonical Dirichlet forms on inhomogeneous Sierpinski gaskets. We prove that the energy measures and suitable reference measures are mutually singular under mild assumptions.

Probability · Mathematics 2021-11-30 Masanori Hino , Madoka Yasui

We present a new approach to the theory of k-forms on self-similar fractals. We work out the details for two examples, the standard Sierpinski gasket and the 3-dimensional Sierpinski gasket, but the method is expected to be effective for…

Classical Analysis and ODEs · Mathematics 2012-06-07 Skye Aaron , Zach Conn , Robert Strichartz , Hui Yu

We prove existence of a measurable Riemannian structure on higher-dimensional harmonic Sierpinski gasket fractals and deduce Gaussian heat kernel bounds in the geodesic metric. Our proof differs from that given by Kigami for the usual…

Classical Analysis and ODEs · Mathematics 2017-03-10 Sara Chari , Joshua Frisch , Daniel J. Kelleher , Luke G. Rogers

The restrictions of a harmonic function on the Sierpinski Gasket (SG) to the segments in SG have been of some interest. We show that the sufficient conditions for the monotonicity of these restrictions given by Dalrymple, Strichartz and…

Dynamical Systems · Mathematics 2007-05-23 B. Demir , V. Dzhafarov , S. Kocak , M. Ureyen

We study energy measures on SG based on harmonic functions. We characterize the positive energy measures through studying the bounds of Radon-Nikodym derivatives with respect to the Kusuoka measure. We prove a limited continuity of the…

Analysis of PDEs · Mathematics 2013-09-25 Renee Bell , Ching-Wei Ho , Robert S. Strichartz

The main goals of this paper are: i) To develop an abstract differential calculus on metric measure spaces by investigating the duality relations between differentials and gradients of Sobolev functions. This will be achieved without…

Metric Geometry · Mathematics 2013-05-22 Nicola Gigli

In this paper, we study the restrictions of both the harmonic functions and the eigenfunctions of the symmetric Laplacian to edges of pre-gaskets contained in the Sierpinski gasket. For a harmonic function, its restriction to any edge is…

Functional Analysis · Mathematics 2017-10-18 Hua Qiu , Haoran Tian

This article develops analysis on fractal $3N$-gaskets, a class of post-critically finite fractals which include the Sierpinski triangle for $N=1$, specifically properties of the Laplacian $\Delta$ on these gaskets. We first prove the…

Mathematical Physics · Physics 2018-06-29 Daniel Kelleher , Nikhar Gupta , Maxwell Margenot , Jason Marsh , William Oakley , Alexander Teplyaev

We study the analogue of polynomials (solutions to $\Delta^{n+1} u =0$ for some $n$) on the Sierpinski gasket ($SG$) with respect to a family of symmetric, self-similar Laplacians constructed by Fang, King, Lee, and Strichartz, extending…

Classical Analysis and ODEs · Mathematics 2020-01-01 Christian Loring , W. Jacob Ogden , Ely Sandine , Robert S. Strichartz

By using the analytic tools of Dirichlet forms, we initiate a study of some non-linear parabolic equations on Sierpinski gasket, motivated by modellings of fluid flows along a fractal (which can be considered as a simplified rough porous…

Classical Analysis and ODEs · Mathematics 2024-10-10 Xuan Liu , Zhongmin Qian

We study boundary value problems for the Laplacian on a domain $\Omega$ consisting of the left half of the Sierpinski Gasket ($SG$), whose boundary is essentially a countable set of points $X$. For harmonic functions we give an explicit…

Analysis of PDEs · Mathematics 2017-02-14 Weilin Li , Robert S. Strichartz
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