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We define new natural variants of the notions of weighted covering and separation numbers and discuss them in detail. We prove a strong duality relation between weighted covering and separation numbers and prove a few relations between the…

Metric Geometry · Mathematics 2013-12-17 Shiri Artstein-Avidan , Boaz A. Slomka

In this work we obtain a transference theorem for Lebesgue spaces with $A_{\infty }$ weights, namely, starting from some uniform-norm inequalities it is possible to obtain similar inequalities in Lebesgue spaces with $A_{\infty }$ weights.…

Functional Analysis · Mathematics 2023-07-27 Ramazan Akgün

Recently we have shown that the equivalence classes of metrics on the double of a metric space $X$ form an inverse semigroup. Here we define an inverse subsemigroup related to a family of isometric subspaces of $X$, which is more…

Metric Geometry · Mathematics 2023-06-28 V. Manuilov

In this work we address the problem of uniform approximation of differential forms starting from weak data defined by integration on rectifiable sets. We study approximation schemes defined by the projection operator L given by either…

Numerical Analysis · Mathematics 2025-12-02 Ludovico Bruni Bruno , Fwderico Piazzon

We study nonsingular branched coverings of a homogeneous space X. There is a vector bundle associated with such a covering which was conjectured by O. Debarre to be ample when the Picard number of X is one. We prove this conjecture, which…

Algebraic Geometry · Mathematics 2007-05-23 Meeyoung Kim , Laurent Manivel

In this paper, we establish a sequential characterisation of Lebesgue fuzzy metric and explore the relationship between Lebesgue, weak G-complete and compact fuzzy metric spaces. We also discuss the Lebesgue property of several well-known…

General Topology · Mathematics 2021-09-30 Sugata Adhya , A. Deb Ray

The aim of this paper is to to show the admissibility of some class of Frechet spaces (see Definition 2.3). In particular, this generalizes the main results of [3]. As an application, we show the admissibility of a large class modular…

Functional Analysis · Mathematics 2021-12-02 Maciej Ciesielski , Grzegorz Lewicki

Given a measure on the Thurston boundary of Teichmueller space, one can pick a geodesic ray joining some basepoint to a randomly chosen point on the boundary. Different choices of measures may yield typical geodesics with different…

Geometric Topology · Mathematics 2014-10-21 Vaibhav Gadre , Joseph Maher , Giulio Tiozzo

Let $G$ be a group with a metric $\mathrm{d}$ invariant under left and right translations, and let $\bar{\mathbb{D}}_r$ be the ball of radius $r$ around the identity. A $(k,r)$-metric approximate subgroup is a symmetric subset $X$ of $G$…

Group Theory · Mathematics 2025-10-01 E. Hrushovski , A. Rodriguez Fanlo

Let $(X,T)$ be a dynamical system where $X$ is a compact metric space and $T:X\rightarrow X$ is continuous and invertible. Assume the Lebesgue covering dimension of $X$ is $d$. We show that for a generic continuous map…

Dynamical Systems · Mathematics 2016-05-16 Yonatan Gutman

We show that for $0<\gamma, \gamma' <1$ and for measurable subsets of the unit square with Lebesgue measure $\gamma$ there exist bi-Lipschitz maps with bounded Lipschitz constant (uniformly over all such sets) which are identity on the…

Analysis of PDEs · Mathematics 2014-11-21 Riddhipratim Basu , Vladas Sidoravicius , Allan Sly

This paper introduces the sequence covering similarity, that we formally define for evaluating the similarity between a symbolic sequence (string) and a set of symbolic sequences (strings). From this covering similarity we derive a…

Data Structures and Algorithms · Computer Science 2018-03-12 Pierre-François Marteau

This paper investigates the dimension theory of some families of continuous piecewise linear iterated function systems. For one family, we show that the Hausdorff dimension of the attractor is equal to the exponential growth rate obtained…

Dynamical Systems · Mathematics 2022-12-20 R. D. Prokaj , K. Simon

The first aim of this study is to define soft sequential compact metric spaces and to investigate some important theorems on soft sequential compact metric space. Second is to introduce net and totally bounded soft metric space and study…

General Mathematics · Mathematics 2013-08-16 Sadi Bayramov , Cigdem Gunduz , Murat I. Yazar

It is shown to be consistent with set theory that the uniformity invariant for Lebesgue measure is strictly greater than the corresponding invariant for Hausdorff r-dimensional measure where 0<r<1.

Logic · Mathematics 2016-08-16 Saharon Shelah , Juris Steprāns

There are two fundamental results in the classical theory of metric Diophantine approximation: Khintchine's theorem and Jarnik's theorem. The former relates the size of the set of well approximable numbers, expressed in terms of Lebesgue…

Number Theory · Mathematics 2007-07-10 Victor Beresnevich , Sanju Velani

The article is devoted to a proof of the optimal upper-bound for Morse Lemma, its "anti"-version and their applications. Roughly speaking, Morse Lemma states that in a hyperbolic metric space, a $\lambda$-quasi-geodesic $\gamma$ sits in a…

Metric Geometry · Mathematics 2013-02-26 Vladimir Shchur

In this note some structural properties of grand variable exponent Lebesgue/ Morrey spaces over spaces of homogeneous type are obtained. In particular, it is proved that the closure of the class of bounded functions and the closure of…

Functional Analysis · Mathematics 2017-10-09 Alexander Meskhi , Yoshihiro Sawano

In this article we investigate the so-called Bilateral Small Lebesgue Spaces: prove that they are associated to the Grand Lebesgue spaces, calculate its fundamental functions and Boyd's indices find its dual spaces etc.

Functional Analysis · Mathematics 2009-04-30 Eugene Ostrovsky , Leonid Sirota

Given a relatively compact set $\Omega \subseteq \mathbb{R}$ of Lebesgue measure $|\Omega|$ and $\varepsilon > 0$, we show the existence of a set $\Lambda \subseteq \mathbb{R}$ of uniform density $D (\Lambda) \leq (1+\varepsilon) |\Omega|$…

Classical Analysis and ODEs · Mathematics 2025-04-16 Marcin Bownik , Jordy Timo van Velthoven