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Related papers: Projective tensor products and Apq spaces

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A proto-quantum space is a (general) matricially normed space in the sense of Effros and Ruan presented in a `matrix-free' language. We show that these spaces have a special (projective) tensor product possessing the universal property with…

Functional Analysis · Mathematics 2017-06-05 A. Ya. Helemskii

Let X be an L1-predual and E,F be Banach spaces. We use the fact that an unconditionally converging operator T from the injective tensor product of X and E to F is strongly bounded and extend T to an operator S on continuous F-valued…

Functional Analysis · Mathematics 2026-04-21 Štěpán Ondřej , Jiří Spurný

We obtain a far-reaching generalization (in several directions) of the theorem of A. Lambert on the existence of the projective tensor product of operator sequence spaces. This result is obtained in the context of spaces, generalizing…

Functional Analysis · Mathematics 2020-03-16 A. Ya. Helemskii

The use of a tensor product perspective has enriched functional analysis and other important areas of mathematics and physics. The context of operator spaces is clearly no exception. The aim of this manuscript is to kick off the development…

Operator Algebras · Mathematics 2023-02-09 Alejandro Chávez-Domínguez , Verónica Dimant , Daniel Galicer

A concept of multiplicator of symmetric function space concerning to projective tensor product is introduced and studied. This allows to obtain some concrete results. In particular, the well-known theorem of R. O'Neil about the boundedness…

Functional Analysis · Mathematics 2007-05-23 S. V. Astashkin

A well-known result going back to the 1930s states that all bounded linear operators mapping scalar-valued $L^1$-spaces into $L^\infty$-spaces are kernel operators and that in fact this relation induces an isometric isomorphism between the…

Functional Analysis · Mathematics 2011-04-28 Delio Mugnolo , Robin Nittka

We propose a theory of $\lambda$-tensor product of operator spaces which extends the theory of Blecher-Paulsen and Effros-Ruan for the operator space projective tensor product \cite{blecp}, \cite{effros}, \cite{eff} and that of…

Functional Analysis · Mathematics 2017-03-03 Vandana Rajpal , Ajay Kumar

In the framework of quantum mechanics over a quadratic extension of the ultrametric field of p-adic numbers, we introduce a notion of tensor product of p-adic Hilbert spaces. To this end, following a standard approach, we first consider the…

Mathematical Physics · Physics 2026-03-26 Paolo Aniello , Lorenzo Guglielmi , Stefano Mancini , Vincenzo Parisi

As is known, there exists an alternative, "non-matricial" way to present basic notions and results of quantum functional analysis (= operator space theory). This approach is based on considering, instead of matrix spaces, a single space,…

Functional Analysis · Mathematics 2007-05-23 A. Ya. Helemskii

This article explores the extension of the classical approximation property and its variants to the nonlinear framework of Lipschitz operator theory. Building on Grothendieck's tensor product methodology, we characterize the Lipschitz…

Functional Analysis · Mathematics 2025-12-09 Arindam Mandal

In arXiv:0707.2151 the authors introduced the theory of local representations of the quantum Teichm\"uller space $\mathcal{T}^q_S$ ($q$ being a fixed primitive $N$-th root of $(-1)^{N + 1}$) and they studied the behaviour of the…

Geometric Topology · Mathematics 2016-10-20 Filippo Mazzoli

For a nontrivial locally compact group $G$, and $p\in [1,\infty)$, consider the Banach algebras of $p$-pseudofunctions, $p$-pseudomeasures, $p$-convolvers, and the full group $L^p$-operator algebra. We show that these Banach algebras are…

Functional Analysis · Mathematics 2019-04-26 Eusebio Gardella , Hannes Thiel

We introduce a Bochner integral approach to projective norm attainment in tensor products of Banach spaces by defining the class of integral projective norm-attaining tensors. This framework provides a broader, measure-theoretic approach to…

Functional Analysis · Mathematics 2026-03-02 Ramón J. Aliaga , Sheldon Dantas , Juan Guerrero-Viu , Mingu Jung , Óscar Roldán

We generalize the tensor product theory for modules for a vertex operator algebra previously developed in a series of papers by the first two authors to suitable module categories for a ''conformal vertex algebra'' or even more generally,…

Quantum Algebra · Mathematics 2008-07-07 Yi-Zhi Huang , James Lepowsky , Lin Zhang

Starting from the meaning of the conjugate of a complex Hilbert space, including a related application of the theorem of Fr\'{e}chet-Riesz (by which an analysis of semilinear operators can be reduced to - linear - operator theory) to a…

Functional Analysis · Mathematics 2026-01-05 Frank Oertel

We prove a complex interpolation formula for the injective tensor product of vector-valued Banach function spaces satisfying certain geometric assumptions. This result unifies results of Kouba, and moreover, our approach offers an alternate…

Functional Analysis · Mathematics 2007-05-23 Andreas Defant , Carsten Michels

While the theory of matrix-weighted function spaces is well established, the majority of previous results in the infinite-dimensional operator-valued setting deal with "no go" theorems, showing the impossibility of some prospective…

Functional Analysis · Mathematics 2026-04-21 Tuomas P. Hytönen , Yinqin Li , Dachun Yang , Wen Yuan

We study the property of being strongly weakly compactly generated (and some relatives) in projective tensor products of Banach spaces. Our main result is as follows. Let $1<p,q<\infty$ be such that $1/p+1/q\geq 1$. Let $X$ (resp., $Y$) be…

Functional Analysis · Mathematics 2022-06-20 José Rodríguez

The linear operators defined on the Lipschitz projective tensor product of X and E motivate the study of a distinct class of operators acting on the cartesian produc X E. This class, denoted by LipL(X E;F), combines Lipschitz and linear…

Functional Analysis · Mathematics 2025-02-04 Athmane Ferradi , Khalil Saadi

We examine some structural properties of (injective and projective) tensor products of $\ell_p$-spaces (projections, complemented subspaces, reflexivity, isomorphisms, etc.). We combine these results with combinatorial arguments to address…

Functional Analysis · Mathematics 2016-09-06 Alvaro Arias , Jeff Farmer
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