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We investigate connections between upper/lower estimates for Banach lattices and the notion of relative s-decomposability, which has roots in interpolation theory. To get a characterization of relatively s-decomposable Banach lattices in…

Functional Analysis · Mathematics 2023-08-07 Sergey V. Astashkin , Per G. Nilsson

This article was initially motivated by our goal to show that the Banach space $\mathbb{G}$ constructed by Gowers in [W. T. Gowers, A solution to Banach's hyperplane problem, Bull. London Math. Soc. 26 (1994), no. 6, 523-530] to settle…

Functional Analysis · Mathematics 2026-03-10 Fernando Albiac , Jose L. Ansorena

If $X$ is an almost transitive Banach space with amenable isometry group (for example, if $X=L^p([0,1])$ with $1\leqslant p<\infty$) and $X$ admits a uniformly continuous map $X\overset\phi\longrightarrow E$ into a Banach space $E$…

Functional Analysis · Mathematics 2022-08-03 Christian Rosendal

In this research we introduce the Banach space valued $H^p$ spaces with $A_p$ weight, and prove the following results: Let $\mathbb{A}$ and $\mathbb{B}$ Banach spaces, and $T$ be a convolution operator mapping $\mathbb{A}$-valued functions…

Functional Analysis · Mathematics 2023-01-06 Sakin Demir

Related to the concept of $p$-compact operator with $p\in [1,\infty]$ introduced by Sinha and Karn, this paper deals with the space $\mathcal{H}^\infty_{\mathcal{K}_p}(U,F)$ of all Banach-valued holomorphic mappings on an open subset $U$ of…

Functional Analysis · Mathematics 2023-02-13 A. Jiménez-Vargas

In this paper we present part I of nonlinear operator ideals theory between metric spaces and Banach spaces. Building upon the definition of operator ideal between arbitrary Banach spaces of A. Pietsch we pose three types of nonlinear…

Functional Analysis · Mathematics 2015-07-06 Manaf Adnan Saleh Saleh

For a metric compact space $L$ and a Banach space $E$, we provide a characterization of the complementability of the Banach space $\mathcal{C}(L)$ of continuous functions on $L$ inside $E$ in terms of the existence of a certain tree in the…

Functional Analysis · Mathematics 2026-03-16 Jakub Rondoš , Damian Sobota

The paper deals with the interplay between boundedness, order and ring structures in function lattices on the line and related metric spaces. It is shown that the lattice of all Lipschitz functions on a normed space $E$ is isomorphic to its…

Functional Analysis · Mathematics 2019-01-10 Félix Cabello Sánchez , Javier Cabello Sánchez

We investigate mapping properties for the Bargmann transform on modulation spaces whose weights and their reciprocals are allowed to grow faster than exponentials. We prove that this transform is isometric and bijective from modulation…

Functional Analysis · Mathematics 2011-06-23 Joachim Toft

In this paper, we will study some properties of b-weakly compact operators and we will investigate their relationships to some variety of operators on the normed vector lattices. With some new conditions, we show that the modulus of an…

Functional Analysis · Mathematics 2019-05-28 Kazem Haghnejad Azar

We study the problem of existence and uniqueness of isometric Banach preduals of a Banach space. We derive necessary and sufficient conditions for the existence of an isometric Banach predual of a Banach space $X$. Then we focus on the case…

Functional Analysis · Mathematics 2023-08-01 Karsten Kruse

We study model-theoretic stability and independence in Banach lattices of the form $L_p(X,U,\mu)$, where $1 \leq p < \infty$. We characterize non-dividing using concepts from analysis and show that canonical bases exist as tuples of real…

Logic · Mathematics 2014-02-10 Itaï Ben Yaacov , Alexander Berenstein , C. Ward Henson

For a bounded function $f$ from the unit sphere of a closed subspace $X$ of a Banach space $Y$, we study when the closed convex hull of its spatial numerical range $W(f)$ is equal to its intrinsic numerical range $V(f)$. We show that for…

Functional Analysis · Mathematics 2007-05-23 Miguel Martin , Javier Meri , Rafael Paya

Building on a recent construction of G. Plebanek and the third named author, it is shown that a complemented subspace of a Banach lattice need not be linearly isomorphic to a Banach lattice. This solves a long-standing open question in…

Functional Analysis · Mathematics 2025-04-07 D. de Hevia , G. Martínez-Cervantes , A. Salguero-Alarcón , P. Tradacete

We study the optimal upper $X_U$ and lower $X_L$ sequence spaces that can be assigned to each Banach lattice $X$. These spaces are symmetric, have the Fatou property and the unit vector basis has in these spaces very special properties.…

Functional Analysis · Mathematics 2026-03-16 Sergey V. Astashkin , Per G. Nilsson

We study the class of Banach lattices that are positively polynomially Schur. Plenty of examples and counterexamples are provided, lattice properties of this class are proved, arbitrary $L_p(\mu)$-spaces are shown to be positively…

Functional Analysis · Mathematics 2020-04-15 Geraldo Botelho , José Lucas P. Luiz

In this paper we study groups of positive operators on Banach lattices. If a certain factorization property holds for the elements of such a group, the group has a homomorphic image in the isometric positive operators which has the same…

Functional Analysis · Mathematics 2023-05-31 Marcel de Jeu , Marten Wortel

The aim of this article is to use Banach lattice techniques to study coordinate systems in function spaces. We begin by proving that the greedy algorithm of a basis is order convergent if and only if a certain maximal inequality is…

Functional Analysis · Mathematics 2026-01-06 Pablo Berná , Daniel Freeman , Timur Oikhberg , Mitchell Taylor

It is known that if $M$ is a finite-dimensional Banach space, or a strictly convex space, or the space $\ell_1$, then every non-expansive bijection $F: B_M \to B_M$ is an isometry. We extend these results to non-expansive bijections $F: B_E…

Functional Analysis · Mathematics 2018-07-16 Olesia Zavarzina

A pair of Banach spaces $(E, F)$ is said to have the weak maximizing property (WMP, for short) if for every bounded linear operator $T$ from $E$ into $F$, the existence of a non-weakly null maximizing sequence for $T$ implies that $T$…

Functional Analysis · Mathematics 2021-04-16 Sheldon Dantas , Mingu Jung , Gonzalo Martínez-Cervantes
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