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Related papers: Almost sure Assouad-like Dimensions of Complementa…

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We study dimensions of sumsets and iterated sumsets and provide natural conditions which guarantee that a set $F \subseteq \mathbb{R}$ satisfies $\overline{\dim}_\text{B} F+F > \overline{\dim}_\text{B} F$ or even $\dim_\text{H} n F \to 1$.…

Metric Geometry · Mathematics 2021-03-26 Jonathan M. Fraser , Douglas C. Howroyd , Han Yu

We show that the Feng-Xiong lower bound of $1/2$ for the box dimension of $\alpha\beta$-sets is tight. We also study how much of an $\alpha\beta$-orbit ``carries the dimension'': deleting an arbitararily small positive density set of times…

Dynamical Systems · Mathematics 2024-10-28 Michael Hochman

We show that self-conformal subsets of $\mathbb{R}$ that do not satisfy the weak separation condition have full Assouad dimension. Combining this with a recent results by K\"aenm\"aki and Rossi we conclude that an interesting dichotomy…

Dynamical Systems · Mathematics 2019-05-02 Jasmina Angelevska , Sascha Troscheit

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

For first-order expansions of the field of real numbers, nondefinability of the set of natural numbers is equivalent to equality of topological and Assouad dimension on images of closed definable sets under definable continuous maps.

Logic · Mathematics 2017-03-30 Philipp Hieronymi , Chris Miller

We derive an upper bound for the Assouad dimension of visible parts of self-similar sets generated by iterated function systems with finite rotation groups and satisfying the open set condition. The bound is valid for all visible parts and…

Dynamical Systems · Mathematics 2022-03-21 Esa Järvenpää , Maarit Järvenpää , Ville Suomala , Meng Wu

The Assouad dimension of a metric space determines its extremal scaling properties. The derived notion of the Assouad spectrum fixes relative scales by a scaling function to obtain interpolation behaviour between the quasi-Assouad and…

Metric Geometry · Mathematics 2020-04-29 Sascha Troscheit

In this paper we study two random analogues of the box-like self-affine attractors introduced by Fraser, itself an extension of Sierpi\'nski carpets. We determine the almost sure box-counting dimension for the homogeneous random case…

Metric Geometry · Mathematics 2019-12-23 Sascha Troscheit

We investigate the Assouad spectrum and dimension of graphs of functions lying in certain Banach spaces. We find the typical values in the sense of Baire category, proving that these values are often as large as possible, given the…

Metric Geometry · Mathematics 2026-01-12 Tianyi Feng , Jonathan Fraser

Given a metric space $X$ of finite asymptotic dimension, we consider a quasi-isometric invariant of the space called dimension function. The space is said to have asymptotic Assouad-Nagata dimension less or equal $n$ if there is a linear…

Geometric Topology · Mathematics 2009-10-14 N. Brodskiy , J. Higes

The purpose of this note is to characterize the asymptotic dimension $asdim(X)$ of metric spaces $X$ in terms similar to Property A of Yu: If $(X,d)$ is a metric space and $n\ge 0$, then the following conditions are equivalent: [a.]…

Metric Geometry · Mathematics 2019-11-18 M. Cencelj , J. Dydak , A. Vavpetic

Let $\psi:\mathbb{N}\rightarrow\mathbb{R}_+$ be a monotonically non-increasing function, and let $\psi_v:\mathbb{N}\rightarrow\mathbb{R}_+$ be defined by $\psi_v(q)=1/q^v$. In this article, we consider self-similar sets whose iterated…

Dynamical Systems · Mathematics 2025-10-21 Suxuan Chen

Recently Koivusalo, Levesley, Ward and Zhang introduced the set of simultaneously $\Phi$-badly approximable real vectors of $\mathbb{R}^m$ with respect to an approximation function $\Phi$, and determined its Hausdorff dimension for the…

Number Theory · Mathematics 2025-03-19 Johannes Schleischitz

We introduce the generalized upper box dimension which is defined for any set, whether the set is bounded or unbounded. We study basic properties of the generalized upper box dimension. We prove that the generalized upper box and upper box…

Classical Analysis and ODEs · Mathematics 2025-10-02 Lipeng Wang , Wenxia Li

We calculate the Assouad dimension of a planar self-affine set $X$ satisfying the strong separation condition and the projection condition and show that $X$ is minimal for the conformal Assouad dimension. Furthermore, we see that such a…

Dynamical Systems · Mathematics 2020-06-23 Balázs Bárány , Antti Käenmäki , Eino Rossi

We consider the Assouad dimensions of orthogonal projections of planar sets onto lines. Our investigation covers both general and self-similar sets. For general sets, the main result is the following: if a set in the plane has Assouad…

Classical Analysis and ODEs · Mathematics 2017-05-04 Jonathan M. Fraser , Tuomas Orponen

Using a special metric in the space of sequences, we give a geometric description of almost periodic sets in the $k$-dimensional Euclidean space. We prove the completeness of the space of almost periodic sets and some analogue of the…

Metric Geometry · Mathematics 2010-02-02 S. Favorov , Ye. Kolbasina

We provide quantitative estimates for the supremum of the Hausdorff dimension of sets in the real line which avoid $\varepsilon$-approximations of arithmetic progressions. Some of these estimates are in terms of Szemer\'{e}di bounds. In…

Classical Analysis and ODEs · Mathematics 2021-03-26 Jonathan M. Fraser , Pablo Shmerkin , Alexia Yavicoli

Previous study of the Assouad dimension of planar self-affine sets has relied heavily on the underlying IFS having a `grid structure', thus allowing for the use of approximate squares. We study the Assouad dimension of a class of…

Classical Analysis and ODEs · Mathematics 2018-04-26 Jonathan M. Fraser , Thomas Jordan

This paper is devoted to the study of the topological pressure dimension for almost additive sequences, which is an extension of topological entropy dimension. We investigate fundamental properties of the topological pressure dimension for…

Dynamical Systems · Mathematics 2014-04-28 Lei Liu , Huajun Gong , Xiaoyao Zhou