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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

We investigate dimension-theoretic properties of concentric topological spheres, which are fractal sets emerging both in pure and applied mathematics. We calculate the box dimension and Assouad spectrum of such collections, and use them to…

Dynamical Systems · Mathematics 2025-04-15 Efstathios Konstantinos Chrontsios Garitsis

We compute the Hausdorff dimension of limit sets generated by 3-dimensional self-affine mappings with diagonal matrices of the form A_{ijk}=Diag(a_{ijk}, b_{ij}, c_{i}), where 0<a_{ijk}\le b_{ij}\le c_i<1. By doing so we show that the…

Dynamical Systems · Mathematics 2020-09-07 Nuno Luzia

We show that the class of quasisymmetric maps between horizontal self-affine carpets is rigid. Such maps can only exist when the dimensions of the carpets coincide, and in this case, the quasisymmetric maps are quasi-Lipschitz. We also show…

Classical Analysis and ODEs · Mathematics 2018-06-27 Antti Käenmäki , Tuomo Ojala , Eino Rossi

Given an expansive matrix $R\in M_d({\mathbb Z})$ and a finite set of digit $B$ taken from $ {\mathbb Z}^d/R({\mathbb Z}^d)$. It was shown previously that if we can find an $L$ such that $(R,B,L)$ forms a Hadamard triple, then the…

Functional Analysis · Mathematics 2020-06-25 Li-Xiang An , Chun-Kit Lai

We study the bi-Lipschitz classification of Bedford-McMullen carpets which are totally disconnected. Let $E$ be a such carpet and let $\mu_E$ be the uniform Bernoulli measure on $E$. We show that the multifractal spectrum and the doubling…

Dynamical Systems · Mathematics 2021-11-15 Hui Rao , Ya-min Yang , Yuan Zhang

We obtain the Assouad dimensions of Moran sets under suitable condition. Using the homogeneous set, we also study the Assouad dimensions of Cantor-like sets.

Metric Geometry · Mathematics 2014-05-06 wen-wen Li , wen-xia Li , jun-jie Miao , li-feng Xi

Let $F$ be a Bedford-McMullen carpet defined by independent integer exponents. We prove that for every line $\ell \subseteq \mathbb{R}^2$ not parallel to the major axes, $$ \dim_H (\ell \cap F) \leq \max \left\lbrace 0,\, \frac{\dim_H…

Dynamical Systems · Mathematics 2021-07-06 Amir Algom , Meng Wu

For any convex preorder on the set of positive roots of affine type A, we classify and construct all associated cuspidal and semicuspidal skew shapes. These combinatorial objects correspond to cuspidal and semicuspidal skew Specht modules…

Bismuth is a particularly promising alternative plasmonic metal because of its theoretically predicted wide spectral bandwidth. In this study, we experimentally demonstrated the correlation between the shape and size of individual bismuth…

Optics · Physics 2025-09-23 Michael Foltýn , Tomáš Šikola , Michal Horák

In this paper we compute the multifractal analysis for local dimensions of Bernoulli measures supported on the self-affine carpets introduced by Bedford-McMullen. This extends the work of King where the multifractal analysis is computed…

Dynamical Systems · Mathematics 2009-11-05 Thomas Jordan , Michal Rams

Let ${\cal M}_{t,v,r}(n,m)$, $2\leq m<n$, be the collection of self-affine carpets with expanding matrix $\diag(n,m)$ which are totally disconnected, possessing vacant rows and with uniform horizontal fibers. In this paper, we introduce a…

Metric Geometry · Mathematics 2020-07-23 Ya-min Yang , Yuan Zhang

We investigate the box dimensions of inhomogeneous self-similar sets. Firstly, we extend some results of Olsen and Snigireva by computing the upper box dimensions assuming some mild separation conditions. Secondly, we investigate the more…

Metric Geometry · Mathematics 2013-07-26 Jonathan M. Fraser

Because of the presence of modified warp factors in metric tensors, we use deformed AdS$_5$ spaces to apply the AdS/CFT correspondence to calculate the spectra for even and odd glueballs, scalar and vector mesons, and baryons with different…

High Energy Physics - Phenomenology · Physics 2020-06-05 Eduardo Folco Capossoli , Miguel Angel Martín Contreras , Danning Li , Alfredo Vega , Henrique Boschi-Filho

We quantify the pointwise doubling properties of self-similar measures using the notion of pointwise Assouad dimension. We show that all self-similar measures satisfying the open set condition are pointwise doubling in a set of full…

Dynamical Systems · Mathematics 2024-01-09 Roope Anttila , Ville Suomala

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

The moduli space of the supersymmetric massive IIA AdS4xS2(B4) vacua, where S2(B4) is a two-sphere bundle over a four-dimensional Kaehler-Einstein base B4, includes three independent parameters which can be thought of as corresponding to…

High Energy Physics - Theory · Physics 2015-06-05 Dimitrios Tsimpis

This paper investigates the analytic and structural properties of the $\phi$-lower Assouad dimension, a generalized notion extending the lower Assouad dimension. We establish the equivalence of $\phi$-lower Assouad dimensions with respect…

Classical Analysis and ODEs · Mathematics 2026-02-10 Haipeng Chen , Wen Wang

Let $E$ be a Bedford-McMullen carpet determined by a set of affine mappings $(f_{ij})_{(i,j)\in G}$ and $\mu$ a self-affine measure on $E$ associated with a probability vector $(p_{ij})_{(i,j)\in G}$. We prove that, for every…

Metric Geometry · Mathematics 2024-05-20 Sanguo Zhu

We show that if $X$ is a uniformly perfect complete metric space satisfying the finite doubling property, then there exists a fully supported measure with lower regularity dimension as close to the lower dimension of $X$ as we wish.…

Classical Analysis and ODEs · Mathematics 2018-05-22 Antti Käenmäki , Juha Lehrbäck