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In this paper, we study stability of $M$-compactness for $l^p$ sum of Banach spaces for $1\leq p<\infty$. We also obtain a characterization of $M$-compact sets in terms of statistically maximizing sequence, a notion which is weaker than a…

Functional Analysis · Mathematics 2020-08-20 Susmita Seal , Sumit Som , Sudeshna Basu , Lakshmi Kanta Dey

We study mapping properties of two-dimensional linear integral operators in some weighted spaces with special kernels. The considered spaces are certain variant of Sobolev--Slobodetskii spaces and their generalizations related to Banach…

Functional Analysis · Mathematics 2023-05-16 Victor Polunin , Vladimir Vasilyev , Nelly Erygina

Let $(M,d)$ be a bounded countable metric space and $c>0$ a constant, such that $d(x,y)+d(y,z)-d(x,z) \ge c$, for any pairwise distinct points $x,y,z$ of $M$. For such metric spaces we prove that they can be isometrically embedded into any…

Functional Analysis · Mathematics 2018-03-01 S. K . Mercourakis , G. Vassiliadis

We give a description of the essential spectrum of a large class of operators on metric measure spaces in terms of their localizations at infinity. These operators are analogues of the elliptic operators on Euclidean spaces and our main…

Mathematical Physics · Physics 2015-03-13 Vladimir Georgescu

We survey classical localization problems arising from quantum network models in symmetry class C and their mappings to history-dependent random walks on directed lattices. We describe how localization versus delocalization of trajectories…

Probability · Mathematics 2026-01-01 Zoey Zhou

In this paper, we study the two different topics related to sequentially Cohen-Macaulay modules. The questions are when the sequentially Cohen-Macaulay property preserve the localization and the module-finite extension of rings.

Commutative Algebra · Mathematics 2015-04-28 Naoki Taniguchi , Tran Thi Phuong , Nguyen Thi Dung , Tran Nguyen An

We investigate conditions under which a co-computably enumerable set in a computable metric space is computable. Using higher-dimensional chains and spherical chains we prove that in each computable metric space which is locally computable…

Logic in Computer Science · Computer Science 2015-07-01 Zvonko Iljazovic

An ideal $I$ is a family of subsets of positive integers $\mathbb{N}$ which is closed under taking finite unions and subsets of its elements. A sequence $(x_k)$ of real numbers is said to be lacunary $I$-convergent to a real number $\ell$,…

Functional Analysis · Mathematics 2014-05-15 Bipan Hazarika , Ayhan Esi

In this paper we have shown that a double sequence in a topological space satisfies certain conditions which in turn are capable to generate a topology on a non empty set. Also we have used the idea of I-convergence of double sequences to…

General Topology · Mathematics 2016-09-05 Amar Kumar Banerjee , Rahul Mondal

Without compactness assumptions, we prove some abstract results which show that a $C^{1}$ functional $I:X\rightarrow \mathbb{R}$ on a Banach space $X$ admits bounded Palais-Smale sequences provided that it exhibits some geometric structure…

Functional Analysis · Mathematics 2015-10-15 Michela Guida , Sergio Rolando

This article continues the investigation of the tracial geometry of classifiable $\mathrm{C}^*$-algebras that have real rank zero and stable rank one. Using the language of optimal transport, we describe several situations in which the…

Operator Algebras · Mathematics 2023-05-08 Bhishan Jacelon

The main purpose of this paper is to introduce a new sequence space by using de la Vallee-Poussin mean and investigate both the modular structure with some geometric properties and some topological properties with respect to the Luxemburg…

Functional Analysis · Mathematics 2009-10-13 Necip Simsek , Ekrem Savas , Vatan Karakaya

We show that if $X$ and $Y$ are Banach spaces, where $Y$ is separable and polyhedral, and if $T:X \to Y$ is a bounded linear operator such that $T^*(Y^*)$ contains a boundary $B$ of $X$, then $X$ is separable and isomorphic to a polyhedral…

Functional Analysis · Mathematics 2022-06-14 Vladimir P Fonf , Richard J Smith , Stanimir Troyanski

The main object of this paper is to study the concept of weak $I^K$-convergence, a generalization of weak $I^*$-convergence of sequences in a normed space, introducing the idea of weak* $I^K$-convergence of sequences of functionals where…

General Topology · Mathematics 2018-11-19 Amar Kumar Banerjee , Mahendranath Paul

We make a systematic study of frames for metric spaces. We prove that every separable metric space admits a metric $\mathcal{M}_d$-frame. Through Lipschitz-free Banach spaces we show that there is a correspondence between frames for metric…

Functional Analysis · Mathematics 2020-11-04 K. Mahesh Krishna , P. Sam Johnson

Localized roll patterns are structures that exhibit a spatially periodic profile in their center. When following such patterns in a system parameter in one space dimension, the length of the spatial interval over which these patterns…

In this paper, we study some topological characteristics of the n-normed spaces. We observe convergence sequences, closed sets, and bounded sets in the n-normed spaces using norms of quotient spaces that will be constructed. These norms…

Functional Analysis · Mathematics 2018-10-19 Harmanus Batkunde , Hendra Gunawan

In this manuscript we consider random objects being measured in multiple metric spaces, which may arise when those objects may be measured in multiple distinct ways. In this new multivariate setting, we define a Fr\'echet covariance and…

Statistics Theory · Mathematics 2023-06-22 Alex Fout , Bailey K. Fosdick

In this paper we introduce and study the local version of the Menger property, namely locally Menger property (or, locally Menger space). We explore some preservation like properties in this space. We also discuss certain situations where…

General Topology · Mathematics 2023-05-26 D. Chandra , N. Alam

Phu introduced the idea of rough convergence of sequences in a normed linear space. Here using the idea of Phu we have brought the idea of rough convergence of sequences in a S-metric space and discussed some of its basic properties.

General Topology · Mathematics 2022-05-30 Rahul Mondal , Sukila Khatun
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