Results 1 to 10 of about 580,219 (274)

Bilinear Ideals in Operator Spaces [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2015
We introduce a concept of bilinear ideal of jointly completely bounded mappings between operator spaces. In particular, we study the bilinear ideals $\mathcal{N}$ of completely nuclear, $\mathcal{I }$ of completely integral, $\mathcal{E}$ of completely ...
Dimant, Verónica   +1 more
core   +6 more sources

Fuzzy Operator Ideals

open access: yesJournal of Applied Science and Engineering, 2022
Although the systematic emergence of the fuzzy functional analysis theory has started in the last few years, we are starting to construct a new theory of fuzzy operator ideals inspired by the classical (crisp) operator ideals theory.
Laith K. Shaakir   +2 more
doaj   +2 more sources

Some Generalized Versions of Chevet–Saphar Tensor Norms

open access: yesMathematics, 2022
The paper is concerned with some generalized versions gE and wE of classical tensor norms. We find a Banach space E for which gE and wE are finitely generated tensor norms, and show that gE and wE are associated with the ideals of some E-nuclear ...
Ju Myung Kim
doaj   +1 more source

Monomial Ideals under Ideal Operations [PDF]

open access: yesCommunications in Algebra, 2015
In this paper, we show for a monomial ideal $I$ of $K[x_1,x_2,\ldots,x_n]$ that the integral closure $\ol{I}$ is a monomial ideal of Borel type (Borel-fixed, strongly stable, lexsegment, or universal lexsegment respectively), if $I$ has the same property.
Guo, Jin, Wu, Tongsuo
openaire   +2 more sources

The New Class $L_{p,\Phi}$ of $s$-Type Operators

open access: yesUniversal Journal of Mathematics and Applications, 2023
In this study, the class of $s$-type $\ell_{p}( \Phi )$ operators is introduced and it is shown that $L_{p,\Phi}$ is a quasi-Banach operator ideal.
Pınar Zengin Alp
doaj   +1 more source

Operator Ideals and Operator Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
We prove that every full symmetrically normed ideal of operators on a Hilbert space is realizable as the set of completely bounded maps between two homogeneous operator Hilbert spaces, with the c.b. norm equivalent to (but in general not equal to) the symmetric norm. We show that one can have equality of the c.b.
Mathes, D. Benjamin, Paulsen, Vern I.
openaire   +1 more source

The Ideal of σ-Nuclear Operators and Its Associated Tensor Norm

open access: yesMathematics, 2020
We introduce a new tensor norm ( σ -tensor norm) and show that it is associated with the ideal of σ -nuclear operators. In this paper, we investigate the ideal of σ -nuclear operators and the σ -tensor norm.
Ju Myung Kim, Keun Young Lee
doaj   +1 more source

The ideal of weakly compactly generated operators acting on a Banach space [PDF]

open access: yes, 2013
We call a bounded linear operator acting between Banach spaces weakly compactly generated ($\mathsf{WCG}$ for short) if its range is contained in a weakly compactly generated subspace of its codomain.
Kania, Tomasz, Kochanek, Tomasz
core   +2 more sources

IDEAL OPERATORS AND HIGHER INDESCRIBABILITY

open access: yesThe Journal of Symbolic Logic, 2022
AbstractWe investigate properties of the ineffability and the Ramsey operator, and a common generalization of those that was introduced by the second author, with respect to higher indescribability, as introduced by the first author. This extends earlier investigations on the ineffability operator by James Baumgartner, and on the Ramsey operator by Qi ...
Cody, Brent, Holy, Peter
openaire   +3 more sources

The history of a general criterium on spaceability

open access: yesOpen Mathematics, 2017
There are just a few general criteria on spaceability. This survey paper is the history of one of the first ones. Let I1 and I2 be arbitrary operator ideals and E and F be Banach spaces.
Sánchez Víctor M.
doaj   +1 more source

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