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Intermediate dimensions were recently introduced to provide a spectrum of dimensions interpolating between Hausdorff and box-counting dimensions for fractals where these differ. In particular, the self-affine Bedford-McMullen carpets are a…

Dynamical Systems · Mathematics 2025-05-07 Amlan Banaji , István Kolossváry

Hausdorff and box dimension are two familiar notions of fractal dimension. Box dimension can be larger than Hausdorff dimension, because in the definition of box dimension, all sets in the cover have the same diameter, but for Hausdorff…

Metric Geometry · Mathematics 2024-06-12 Amlan Banaji

We introduce a continuum of dimensions which are `intermediate' between the familiar Hausdorff and box dimensions. This is done by restricting the families of allowable covers in the definition of Hausdorff dimension by insisting that $|U|…

Metric Geometry · Mathematics 2021-03-26 Kenneth J. Falconer , Jonathan M. Fraser , Tom Kempton

We study the orthogonal projections of a large class of self-affine carpets, which contains the carpets of Bedford and McMullen as special cases. Our main result is that if $\Lambda$ is such a carpet, and certain natural irrationality…

Dynamical Systems · Mathematics 2013-03-21 Andrew Ferguson , Thomas Jordan , Pablo Shmerkin

We calculate the Assouad and lower dimensions of graph-directed Bedford-McMullen carpets, which reflect the extreme local scaling laws of the sets, in contrasting with known results on Hausdorff and box dimensions. We also investigate the…

Classical Analysis and ODEs · Mathematics 2024-11-26 Hua Qiu , Qi Wang , Shufang Wang

We consider the dimensions of a family of self-affine sets related to the Bedford-McMullen carpets. In particular, we fix a Bedford-McMullen system and then randomise the translation vectors with the stipulation that the column structure is…

Dynamical Systems · Mathematics 2017-03-30 Jonathan Fraser , Pablo Shmerkin

The intermediate dimensions are a family of dimensions which interpolate between the Hausdorff and box dimensions of sets. We prove a necessary and sufficient condition for a given function $h(\theta)$ to be realized as the intermediate…

Metric Geometry · Mathematics 2024-08-13 Amlan Banaji , Alex Rutar

We introduce a family of dimensions, which we call the $\Phi$-intermediate dimensions, that lie between the Hausdorff and box dimensions and generalise the intermediate dimensions introduced by Falconer, Fraser and Kempton. This is done by…

Metric Geometry · Mathematics 2023-10-24 Amlan Banaji

This article surveys the $\theta$-intermediate dimensions that were introduced recently which provide a parameterised continuum of dimensions that run from Hausdorff dimension when $\theta=0$ to box-counting dimensions when $\theta=1$. We…

Metric Geometry · Mathematics 2021-02-08 Kenneth J. Falconer

We introduce and study bi-Lipschitz-invariant dimensions that range between the box and Assouad dimensions. The quasi-Assouad dimensions and $\theta$-spectrum are other special examples of these intermediate dimensions. These dimensions are…

Classical Analysis and ODEs · Mathematics 2020-09-09 Ignacio García , Kathryn Hare , Franklin Mendivil

$\theta$ intermediate dimensions are a continuous family of dimensions that interpolate between Hausdorff and Box dimensions of fractal sets. In this paper we study the problem of the relationship between the dimension of a set…

Classical Analysis and ODEs · Mathematics 2025-11-07 Angelini Nicolas , Molter Ursula

Let $\Lambda$ be the limit set of an infinite conformal iterated function system and let $F$ denote the set of fixed points of the maps. We prove that the box dimension of $\Lambda$ exists if and only if \[ \overline{\dim}_{\mathrm B} F\leq…

Dynamical Systems · Mathematics 2024-08-13 Amlan Banaji , Alex Rutar

Tsukamoto (2022) introduced the notion of Bedford-McMullen carpet system, a subsystem of $([0,1]^{\mathbb{N}}\times[0,1]^{\mathbb{N}},shift)$ whose metric mean dimension and mean Hausdorff dimension does not coincide in general. The aim of…

Dynamical Systems · Mathematics 2024-12-06 Qiang Huo

Intermediate dimensions were recently introduced to interpolate between the Hausdorff and box-counting dimensions of fractals. Firstly, we show that these intermediate dimensions may be defined in terms of capacities with respect to certain…

Classical Analysis and ODEs · Mathematics 2021-05-21 Stuart A. Burrell , Kenneth J. Falconer , Jonathan M. Fraser

We determine the Hausdorff, packing and box-counting dimension of a family of self-affine sets generalizing Bara\'nski carpets. More specifically, we fix a Bara\'nski system and allow both vertical and horizontal random translations, while…

Dynamical Systems · Mathematics 2017-05-22 Leticia Pardo Simón

We study Bedford--McMullen type carpets whose selected grid rectangles may be reflected in one or both coordinates. The organizing principle is that the Hausdorff dimension is controlled by the entropy of the weak-coordinate projection.…

Dynamical Systems · Mathematics 2026-04-21 Vyacheslav Koval

The purpose of this paper is to complete the proof of the following result. Let $0 < \beta \leq \alpha < 1$ and $\kappa > 0$. Then, there exists $\eta > 0$ such that whenever $A,B \subset \mathbb{R}$ are Borel sets with $\dim_{\mathrm{H}} A…

Classical Analysis and ODEs · Mathematics 2022-01-04 Tuomas Orponen

We study the dimension theory of limit sets of iterated function systems consisting of a countably infinite number of contractions. Our primary focus is on the intermediate dimensions: a family of dimensions depending on a parameter $\theta…

Dynamical Systems · Mathematics 2024-03-20 Amlan Banaji , Jonathan M. Fraser

The intermediate dimensions are a family of dimensions introduced in 2019 by Falconer, Fraser, and Kempton [arXiv:1811.06493] to interpolate between the Hausdorff dimension and the box dimension. To date, there are limited examples of…

Metric Geometry · Mathematics 2020-08-25 Justin T. Tan

In this paper we compute the Assouad and lower spectra of Bedford--McMullen sponges in $\mathbb{R}^3$ explicitly. According to the formulae established, we discover that the spectra are not determined by the ratio set, and the box, lower…

Classical Analysis and ODEs · Mathematics 2025-07-31 Qiang Huo
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