Results 1 to 10 of about 41,827 (155)

On Bilinear Narrow Operators [PDF]

open access: yesMathematics, 2021
In this article, we introduce a new class of operators on the Cartesian product of vector lattices. We say that a bilinear operator T:E×F→W defined on the Cartesian product of vector lattices E and F and taking values in a vector lattice W is narrow if ...
Marat Pliev   +2 more
doaj   +4 more sources

Points of narrowness and uniformly narrow operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2017
It is known that the sum of every two narrow operators on $L_1$ is narrow, however the same is false for $L_p$ with $1 < p < \infty$. The present paper continues numerous investigations of the kind.
A.I. Gumenchuk   +2 more
doaj   +3 more sources

On Narrow Operators from $$L_p$$ into Operator Ideals

open access: yesMediterranean Journal of Mathematics, 2022
AbstractIt is well known that every $$l_2$$ l 2 -strictly singular operator from $$L_p$$ L p , $$1<p<\infty $$ 1
Marat Pliev   +2 more
exaly   +2 more sources

G-narrow operators and G-rich subspaces

open access: yesOpen Mathematics, 2013
Abstract Let X and Y be Banach spaces. An operator G: X → Y is a Daugavet center if ‖G +T‖ = ‖G‖+‖T‖ for every rank-1 operator T. For every Daugavet center G we consider a certain set of operators acting from X, so-called G-narrow operators.
Ivashyna Tetiana
doaj   +3 more sources

On sums of narrow and compact operators

open access: yesPositivity, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mikhail Popov
exaly   +3 more sources

On the Sum of Narrow Orthogonally Additive Operators

open access: yesRussian Mathematics, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
exaly   +3 more sources

Domination problem for narrow orthogonally additive operators [PDF]

open access: yesPositivity, 2016
12 pages. arXiv admin note: text overlap with arXiv:1309.6074.
Marat Pliev
exaly   +3 more sources

Narrow operators and the Daugavet property for ultraproducts [PDF]

open access: yesPositivity, 2005
We show that if $T$ is a narrow operator on $X=X_{1}\oplus_{1} X_{2}$ or $X=X_{1}\oplus_{\infty} X_{2}$, then the restrictions to $X_{1}$ and $X_{2}$ are narrow and conversely. We also characterise by a version of the Daugavet property for positive operators on Banach lattices which unconditional sums of Banach spaces inherit the Daugavet property, and
Vladimir Kadets, Dirk Werner
exaly   +3 more sources

On linear sections of orthogonally additive operators

open access: yesМатематичні Студії, 2022
Our first result asserts that, for linear regular operators acting from a Riesz space with the principal projection property to a Banach lattice with an order continuous norm, the $C$-compactness is equivalent to the $AM$-compactness. Next we prove that,
A. Gumenchuk, I. Krasikova, M. Popov
doaj   +1 more source

Widening and narrowing operators for abstract interpretation [PDF]

open access: yesComputer Languages, Systems & Structures, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
CORTESI, Agostino, ZANIOLI, Matteo
openaire   +3 more sources

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