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相关论文: An arbitrarily distortable Banach space

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We prove the result stated in the title. This provides a first example of an infinite-dimensional Banach space whose Lipschitz free space is isomorphic to the free space of a compact set.

泛函分析 · 数学 2019-11-14 Luis C. García-Lirola , Antonin Prochazka

Our goal of this note is to give an easy proof that spaces of predictable processes with values in a Banach space are isomorphic to spaces of progressive resp. adapted, measurable processes. This provides a straightforward extension of the…

概率论 · 数学 2025-11-21 Barbara Rüdiger , Stefan Tappe

We survey recent developments on the structure of complemented subspaces of Banach lattices, including in particular the construction of a complemented subspace of a $C(K)$-space which is not linearly isomorphic to any Banach lattice.…

泛函分析 · 数学 2025-07-15 David de Hevia , Pedro Tradacete

We present a reflexive Banach space with an unconditional basis which is quasi-minimal and tight by range, i.e. of type (4) in Ferenczi-Rosendal list within the framework of Gowers' classification program of Banach spaces, but contrary to…

泛函分析 · 数学 2013-04-01 A. Manoussakis , A. Pelczar-Barwacz

In this paper, the concept of selective real manifolds is extended. It is proved that the product of two selective Banach manifolds is a selective Banach manifold. The notion of the $\alpha$--level differentiation of the mappings between…

泛函分析 · 数学 2015-11-09 Mohammad Mehrpoya , Mohammadreza Molaei

We review the current state of the homogeneous Banach space problem. We then formulate several questions which arise naturally from this problem, some of which seem to be fundamental but new. We give many examples defining the bounds on the…

泛函分析 · 数学 2016-09-06 Peter G. Casazza

In this paper, we begin by constructing global linear maps on (n-2)-dimensional subspaces, derived from the local continuity of linear transformations among central sections of a convex body. Using these linear maps, we subsequently…

泛函分析 · 数学 2026-04-07 Ning Zhang

We construct a nonseparable Banach space $\mathcal X$ (actually, of density continuum) such that any uncountable subset $\mathcal Y$ of the unit sphere of $\mathcal X$ contains uncountably many points distant by less than $1$ (in fact, by…

泛函分析 · 数学 2021-06-09 Piotr Koszmider

In this note, we provide a starlike and normal tiling in any separable Banach space. That means, there are positive constants r and R (not depending on the separable Banach space) such that every tile of this tiling is starlike, contains a…

泛函分析 · 数学 2020-08-25 Robert Deville , Mar Jimenez-Sevilla

Necessary and sufficient conditions for Banach space to be(isometrically isomorphic to) a dual space will be given.

泛函分析 · 数学 2010-03-12 Stefano Rossi

We show that complemented subspaces of uncountable products of Banach spaces are products of complemented subspaces of countable subproducts.

泛函分析 · 数学 2007-05-23 Alex Chigogidze

A Banach space contains asymptotically isometric copies of $\ell_1$ if and only if its dual space contains an isometric copy of $L_1$.

泛函分析 · 数学 2007-05-23 S. J. Dilworth , Maria Girardi , J. Hagler

A topological space is said to be sequential if every sequentially closed subspace is closed. We consider Banach spaces with weak*-sequential dual ball. In particular, we show that if $X$ is a Banach space with weak*-sequentially compact…

泛函分析 · 数学 2016-12-20 Gonzalo Martínez-Cervantes

For every Banach space $Z$ with a shrinking unconditional basis satisfying upper $p$-estimates for some $p > 1$, an isomorphically polyhedral Banach space is constructed having an unconditional basis and admitting a quotient isomorphic to…

泛函分析 · 数学 2008-09-11 Ioannis Gasparis

This is the second part in a series dealing with subspaces of de Branges spaces of entire function generated by majorization on subsets of the closed upper half-plane. In this part we investigate certain Banach spaces generated by…

复变函数 · 数学 2011-12-26 Anton Baranov , Harald Woracek

Rearrangement-invariance in function spaces can be viewed as a kind of generalization of 1-symmetry for Schauder bases. We define subrearrangement-invariance in function spaces as an analogous generalization of 1-subsymmetry. It is then…

泛函分析 · 数学 2021-01-06 Ben Wallis

The method of compatible sequences is introduced in order to produce non-trivial (closed) invariant subspaces of (bounded linear) operators. Also a topological tool is used which is new in the search of invariant subspaces: the extraction…

泛函分析 · 数学 2007-05-23 George Androulakis

In this paper, we study spaceability of subsets of generalized Orlicz and Lebesgue spaces associated to Banach function space. Also, we give some sufficient conditions for spaceability of subsets of a general Banach space which improves an…

泛函分析 · 数学 2022-08-09 Alireza Bagheri Salec , Stefan Ivkovic , Seyyed Mohammad Tabatabaie

We construct an example of a real Banach space whose group of surjective isometries has no uniformly continuous one-parameter semigroups, but the group of surjective isometries of its dual contains infinitely many of them. Other examples…

泛函分析 · 数学 2008-11-05 Miguel Martin

We construct a hereditarily indecomposable Banach space with dual isomorphic to $\ell_1$. Every bounded linear operator on this space has the form $\lambda I+K$ with $\lambda$ a scalar and $K$ compact.

泛函分析 · 数学 2009-03-24 Spiros A Argyros , Richard G Haydon