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Let $\{S_i\}_{i=1}^{l}$ be an iterated function system(IFS) on $\mathbb{R}^d$ with attractor K. Let $\pi$ be the canonical projection. In this paper we define a new concept called "projection pressure" $P_\pi(\phi)$ for $\phi\in…

Dynamical Systems · Mathematics 2010-03-15 Chenwei Wang , Ercai Chen

We compute the almost sure Hausdorff dimension of random self-affine sponges in $\mathbb{R}^d$ without imposing any separation conditions. In this context, randomness arises from the matrices in the defining semigroup, which are random yet…

Dynamical Systems · Mathematics 2025-05-08 Balázs Bárány , Antti Käenmäki , Michał Rams

Let $X=\bigcup\varphi_{i}X$ be a strongly separated self-affine set in $\mathbb{R}^2$ (or one satisfying the strong open set condition). Under mild non-compactness and irreducibility assumptions on the matrix parts of the $\varphi_{i}$, we…

Metric Geometry · Mathematics 2017-12-21 Balázs Bárány , Michael Hochman , Ariel Rapaport

We study Fourier frames of exponentials on fractal measures associated with a class of affine iterated function systems. We prove that, under a mild technical condition, the Beurling dimension of a Fourier frame coincides with the Hausdorff…

Functional Analysis · Mathematics 2010-06-07 Dorin Ervin Dutkay , Deguang Han , Qiyu Sun , Eric Weber

In this paper, we present a second partial solution for the problem of cardinality calculation of the set of fractals for its subcategory of the random virtual ones. Consistent with the deterministic case, we show that for the given…

Probability · Mathematics 2022-06-07 Mohsen Soltanifar

We completely describe the equilibrium states of a class of potentials over the full shift which includes Falconer's singular value function for affine iterated function systems with invertible affinities. We show that the number of…

Dynamical Systems · Mathematics 2018-03-22 Jairo Bochi , Ian D. Morris

A representation of frequency of strings of length K in complete genomes of many organisms in a square has led to seemingly self-similar patterns when K increases. These patterns are caused by under-represented strings with a certain…

Biological Physics · Physics 2015-06-26 Zu-Guo Yu , Bai-lin Hao , Hui-min Xie , Guo-Yi Chen

By viewing the covers of a fractal as a statistical mechanical system, the exact capacity of a multifractal is computed. The procedure can be extended to any multifractal described by a scaling function to show why the capacity and…

chao-dyn · Physics 2009-10-22 Ronnie Mainieri

Using generating functions techniques we develop a relation between the Hausdorff and spectral dimension of trees with a unique infinite spine. Furthermore, it is shown that if the outgrowths along the spine are independent and identically…

Statistical Mechanics · Physics 2012-06-22 Sigurdur Orn Stefansson , Stefan Zohren

In this paper, we answer a question of Nussbaum, Priyadarshi, and Lunel [Positive operators and Hausdorff dimension of invariant sets, Trans. Amer. Math. Soc. 364(2) (2012) 1029-1066.]. We also show that the Hausdorff dimension and box…

Dynamical Systems · Mathematics 2021-01-20 S. Verma

We investigate the Hausdorff measure and content on a class of quasi self-similar sets that include, for example, graph-directed and sub self-similar and self-conformal sets. We show that any Hausdorff measurable subset of such a set has…

Metric Geometry · Mathematics 2020-03-04 Jasmina Angelevska , Antti Käenmäki , Sascha Troscheit

We consider a family of conformal iterated function systems (for short, CIFSs) of generalized complex continued fractions. Note that in our previous paper we showed that the proper-dimensional Hausdorff measure of the limit set is zero and…

Dynamical Systems · Mathematics 2024-08-21 Kanji Inui , Hiroki Sumi

The classical Hausdorff dimension of finite or countable sets is zero. We define an analog for finite sets, called finite Hausdorff dimension which is non-trivial. It turns out that a finite bound for the finite Hausdorff dimension…

Discrete Mathematics · Computer Science 2015-08-13 Juan M. Alonso

Under a reasonable decay assumption on the approximating function, we establish a zero-full law for the Hausdorff measure of sets of inhomogeneous Dirichlet non-improvable affine forms with weights, thereby answering a question posed by Kim…

Number Theory · Mathematics 2025-05-23 Yubin He

In this paper we define distance expanding random dynamical systems. We develop the appropriate thermodynamic formalism of such systems. We obtain in particular the existence and uniqueness of invariant Gibbs states, the appropriate…

Dynamical Systems · Mathematics 2010-12-08 Volker Mayer , Bartlomiej Skorulski , Mariusz Urbański

In this paper, we consider a regular tessellation of the Euclidean plane and the sequence of its geometric scalings by negative powers of a fixed integer. We generate iteratively random sets as the union of adjacent tiles from these…

Probability · Mathematics 2024-10-30 Pierre Calka , Yann Demichel

We discuss the geometry of trees endowed with a causal structure using the conventional framework of equilibrium statistical mechanics. We show how this ensemble is related to popular growing network models. In particular we demonstrate…

Statistical Mechanics · Physics 2007-05-23 P. Bialas

In this paper we study the behaviour at infinity of the Fourier transform of Radon measures supported by the images of fractal sets under an algorithmically random Brownian motion. We show that, under some computability conditions on these…

Computational Complexity · Computer Science 2015-07-01 Willem Louw Fouché , Safari Mukeru , George Davie

Using well-known results from statistical physics, concerning the almost-sure behavior of the free energy of directed polymers in a random medium, we prove that random tree codes achieve the distortion-rate function almost surely under a…

Information Theory · Computer Science 2008-12-15 Neri Merhav

We show that fractal percolation sets in $\mathbb{R}^{d}$ almost surely intersect every hyperplane absolutely winning (HAW) set with full Hausdorff dimension. In particular, if $E\subset\mathbb{R}^{d}$ is a realization of a fractal…

Probability · Mathematics 2019-12-23 Yiftach Dayan