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We prove that a Schauder frame for any separable Banach space is shrinking if and only if it has an associated space with a shrinking basis, and that a Schauder frame for any separable Banach space is shrinking and boundedly complete if and…

Functional Analysis · Mathematics 2012-02-14 Kevin Beanland , Daniel Freeman , Rui Liu

We introduce the notion of a continuous Schauder frame for a Banach space. This is both a generalization of continuous frames and coherent states for Hilbert spaces and a generalization of unconditional Schauder frames for Banach spaces. As…

Functional Analysis · Mathematics 2018-12-21 Joseph Eisner , Daniel Freeman

We extend the concept of weaving Hilbert space frames to the Banach space setting. Similar to frames in a Hilbert space, we show that for any two approximate Schauder frames for a Banach space, every weaving is an approximate Schauder frame…

Functional Analysis · Mathematics 2015-11-20 Peter G. Casazza , Daniel Freeman , Richard G. Lynch

In this paper, we prove the following results. There exists a Banach space without basis which has a Schauder frame. There exists an universal Banach space $B$ (resp. $\tilde{B}$) with a basis (resp. an unconditional basis) such that, a…

Functional Analysis · Mathematics 2023-07-19 Rafik Karkri , Samir Kabbaj , Hamad Sidi Lafdal

In this paper, we introduce, for a separable Banach spacea new notion of besselian paires and of besselian Schauder frames for which we prove for some fundamental results.

General Mathematics · Mathematics 2021-10-26 Rafik Karkri , Hicham Zoubeir

We investigate possible quantifications of R. C. James' classical work on bases and reflexivity of Banach spaces. By introducing new quantities measuring how far a basic sequence is from being shrinking and/or boundedly complete, we prove…

Functional Analysis · Mathematics 2021-04-15 Dongyang Chen , Tomasz Kania , Yingbin Ruan

For a Banach space $X$ with a shrinking Schauder frame $(x_i,f_i)$ we provide an explicit method for constructing a shrinking associated basis. In the case that the minimal associated basis is not shrinking, we prove that every shrinking…

Functional Analysis · Mathematics 2022-05-23 Kevin Beanland , Daniel Freeman

Difficulty in the construction of dual frames for a given Hilbert space led to the introduction of approximately dual frames in Hilbert spaces by Christensen and Laugesen. It becomes even more difficult in Banach spaces to construct duals.…

Functional Analysis · Mathematics 2021-10-20 K. Mahesh Krishna , P. Sam Johnson

We develope a local theory for frames on finite dimensional Hilbert spaces. In particular, a bounded frame on a finite dimensional Hilbert space contains a subset which is a good Riesz basis for a percentage (arbitrarily close to one) of…

Functional Analysis · Mathematics 2007-05-23 Peter G. Casazza

In this paper we survey known results of characterizations of reflexive Banach spaces, which are based on convergence of usual and generalized arithmetic mean (or Ces\`aro sum), weakly compact subsets, affine sets in a Banach space or its…

Functional Analysis · Mathematics 2025-03-17 Tianyi Zhou

We give an intrinsic characterisation of the separable reflexive Banach spaces that embed into separable reflexive spaces with an unconditional basis all of whose normalised block sequences with the same growth rate are equivalent. This…

Functional Analysis · Mathematics 2011-06-03 Christian Rosendal

We study conditions on a Banach frame that ensures the validity of a reconstruction formula. In particular, we show that any Banach frames for (a subspace of) $L_p$ or $L_{p,q}$ ($1\le p < \infty$) with respect to a solid sequence space…

Functional Analysis · Mathematics 2011-01-13 Daniel Carando , Silvia Lassalle , Pablo Schmidberg

We present a new proof of Zippin's Embedding Theorem, that every separable reflexive Banach space embeds into one with shrinking and boundedly complete basis, and every Banach space with a separable dual embeds into one with a shrinking…

Functional Analysis · Mathematics 2014-08-15 Thomas Schlumprecht

Notion of frames and Bessel sequences for metric spaces have been introduced. This notion is related with the notion of Lipschitz free Banach spaces. \ It is proved that every separable metric space admits a metric $\mathcal{M}_d$-frame.…

Functional Analysis · Mathematics 2024-08-09 K. Mahesh Krishna

Using methods of descriptive set theory, in particular, the determinacy of infinite games of perfect information, we answer several questions from the literature regarding different notions of bases in Banach spaces and lattices. For the…

Functional Analysis · Mathematics 2026-04-06 Antonio Avilés , Christian Rosendal , Mitchell A. Taylor , Pedro Tradacete

Paley-Wiener theorem for frames for Hilbert spaces, Banach frames, Schauder frames and atomic decompositions for Banach spaces are known. In this paper, we derive Paley-Wiener theorem for p-approximate Schauder frames for separable Banach…

Functional Analysis · Mathematics 2020-12-08 K. Mahesh Krishna , P. Sam Johnson

It is known in Hilbert space frame theory that a Bessel sequence can be expanded to a frame. Contrary to Hilbert space situation, using a result of Casazza and Christensen, we show that there are Banach spaces and approximate Bessel…

Functional Analysis · Mathematics 2021-02-08 K. Mahesh Krishna , P. Sam Johnson

We study random unconditional convergence for a basis in a Banach space. The connections between this notion and classical unconditionality are explored. In particular, we analyze duality relations, reflexivity, uniqueness of these bases…

Functional Analysis · Mathematics 2014-08-05 J. Lopez-Abad , P. Tradacete

In this paper, we give a characterization and a some properties of a besselian sequences, which allows us to build some examples of a besselian Schauder frames. Also for a reflexive Banach spaces (with a besselian Schauder frames) we give…

Functional Analysis · Mathematics 2023-04-13 Samir Kabbaj , Rafik Karkri , Zoubeir Hicham

A basic problem of interest in connection with the study of Schauder frames in Banach spaces is that of characterizing those Schauder frames which can essentially be regarded as Schauder bases. In this paper, we give a solution to this…

Functional Analysis · Mathematics 2010-02-23 Rui Liu , Bentuo Zheng
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