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This article is devoted to sets having the Moran structure. The main attention is given to topological, metric, and fractal properties of certain sets whose elements have restrictions on using digits or combinations of digits in own…

Classical Analysis and ODEs · Mathematics 2022-06-29 Symon Serbenyuk

A separable metric space X is an H-null set if any uniformly continuous image of X has Hausdorff dimension zero. upper H-null, directed P-null and P-null sets are defined likewise, with other fractal dimensions in place of Hausdorff…

Logic · Mathematics 2012-08-29 Ondrej Zindulka

A homogeneous Gibbons-Hawking ansatz is described, leading to 4-dimensional hyperkahler metrics with homotheties. In combination with Blaschke products on the unit disc in the complex plane, this ansatz allows one to construct…

Differential Geometry · Mathematics 2010-08-27 Hansjörg Geiges , Jesús Gonzalo

In this paper, we study the question of classifying self-similar sets under bi-Lipschitz mappings and obtain an important bi-Lipschitz invariant, which is an ideal of a ring related to IFS. Roughly speaking, different Lipschitz equivalence…

Metric Geometry · Mathematics 2013-04-19 Li-Feng Xi , Ying Xiong

We study geometric rigidity of a class of fractals, which is slightly larger than the collection of self-conformal sets. Namely, using a new method, we shall prove that a set of this class is contained in a smooth submanifold or is totally…

Dynamical Systems · Mathematics 2017-01-31 Antti Käenmäki

We consider the concept of fractons, i.e. particles or quasiparticles which obey specific fractal distribution function and for each universal class h of particles we obtain a fractal-deformed Heisenberg algebra. This one takes into account…

High Energy Physics - Theory · Physics 2007-05-23 Wellington da Cruz

We compute the Hausdorff, upper box and packing dimensions for certain inhomogeneous Moran set constructions. These constructions are beyond the classical theory of iterated function systems, as different nonlinear contraction…

Dynamical Systems · Mathematics 2012-11-14 Mark Holland , Yiwei Zhang

We obtain fractal Lipschitz-Killing curvature-direction measures for a large class of self-similar sets F in R^d. Such measures jointly describe the distribution of normal vectors and localize curvature by analogues of the higher order mean…

Metric Geometry · Mathematics 2012-12-19 Tilman Johannes Bohl , Martina Zähle

We introduce a class of complex manifolds which we call weakly holomorphic homogeneous regular manifolds (wHHR) manifolds. As the name suggests, this class contains the so-called holomorphic homogeneous regular manifolds but also other…

Complex Variables · Mathematics 2025-03-25 Andrew Zimmer

We show that self-similar sets arising from iterated function systems that satisfy the Moran open-set condition, a canonical class of fractal sets, are `equi-homogeneous'. This is a regularity property that, roughly speaking, means that at…

Classical Analysis and ODEs · Mathematics 2016-08-29 Alexander M. Henderson , Eric J. Olson , James C. Robinson , Nicholas Sharples

The paper is devoted to perfect and almost perfect homogeneous polytopes in Euclidean spaces. We classified perfect and almost perfect polytopes among all regular polytopes and all semiregular polytopes excepting Archimedean solids and two…

Metric Geometry · Mathematics 2024-02-28 V. N. Berestovskii , Yu. G. Nikonorov

By introducing new deformations on symbolic Cantor sets and ultrametric spaces, we prove that doubling ultrametric spaces admit bilipschitz embedding into Cantor sets. If in addition the spaces are uniformly perfect, we show that they are…

Complex Variables · Mathematics 2019-11-05 Qingshan Zhou , Xining Li , Yaxiang Li

The Heisenberg group $\mathbb{H}$ equipped with a sub-Riemannian metric is one of the most well known examples of a doubling metric space which does not admit a bi-Lipschitz embedding into any Euclidean space. In this paper we investigate…

Metric Geometry · Mathematics 2018-12-20 Vasileios Chousionis , Sean Li , Vyron Vellis , Scott Zimmerman

This paper is concerned with uniform measure estimates for nodal sets of solutions in elliptic homogenization. We consider a family of second-order elliptic operators $\{ \mathcal{L}_\e\}$ in divergence form with rapidly oscillating and…

Analysis of PDEs · Mathematics 2018-05-25 Fanghua Lin , Zhongwei Shen

Let $K,F\subset\mathbb{R}^d$ be two dust-like self-similar sets sharing the same Hausdorff dimension. We consider when the mere existence of a Lipschitz embedding from $K$ to $F$ already implies their Lipschitz equivalence. Our main result…

Classical Analysis and ODEs · Mathematics 2025-09-09 Huo-Jun Ruan , Jian-Ci Xiao

The germ of an algebraic variety is naturally equipped with two different metrics up to bilipschitz equivalence. The inner metric and the outer metric. One calls a germ of a variety Lipschitz normally embedded if the two metrics are…

Algebraic Geometry · Mathematics 2017-03-14 Dmitry Kerner , Helge Møller Pedersen , Maria A. S. Ruas

Multifractals are inhomogeneous measures (or functions) which are typically described by a full spectrum of real dimensions, as opposed to a single real dimension. Results from the study of fractal strings in the analysis of their geometry,…

Mathematical Physics · Physics 2008-10-07 Michel L. Lapidus , John A. Rock

For self-similar fractals, the Minkowski content and fractal curvature have been introduced as a suitable limit of the geometric characteristics of its parallel sets, i.e., of uniformly thin coatings of the fractal. For some self-conformal…

Metric Geometry · Mathematics 2015-03-13 Tilman Johannes Bohl

We introduce two fractals, in Euclidean spaces of dimension two and three respectively, such the $2$-conductive homogeneity holds but there is some $\eps \in (0, 1)$ so that the $p$-conductive homogeneity fails for every $p\in (1, 1+\eps)$.…

Functional Analysis · Mathematics 2024-02-06 Shiping Cao , Zhen-Qing Chen

Let M be a smooth compact connected oriented manifold of dimension at least two endowed with a volume form. We show that every homogeneous quasi-morphism on the identity component $Diff_0(M,vol)$ of the group of volume preserving…

Geometric Topology · Mathematics 2012-09-04 Michael Brandenbursky