Results 11 to 20 of about 372,791 (306)

Unconditionally convergent series of operators and narrow operators on $L_1$ [PDF]

open access: greenBulletin of the London Mathematical Society, 2003
We introduce a class of operators on $L_1$ that is stable under taking sums of pointwise unconditionally convergent series, contains all compact operators and does not contain isomorphic embeddings. It follows that any operator from $L_1$ into a space with an unconditional basis belongs to this class.
Vladimir Kadets   +2 more
  +7 more sources

$L$-orthogonality in Daugavet centers and narrow operators [PDF]

open access: greenJournal of Mathematical Analysis and Applications, 2020
We study the presence of $L$-orthogonal elements in connection with Daugavet centers and narrow operators. We prove that, if $\dens(Y)\leq _1$ and $G:X\longrightarrow Y$ is a Daugavet center, then $G(W)$ contains some $L$-orthogonal for every non-empty $w^*$-open subset of $B_{X^{**}}$.
Abraham Rueda Zoca
openalex   +3 more sources

Narrow operators on lattice-normed spaces and vector measures [PDF]

open access: green, 2015
We consider linear narrow operators on lattice-normed spaces. We prove that, under mild assumptions, every finite rank linear operator is strictly narrow (before it was known that such operators are narrow). Then we show that every dominated, order continuous linear operator from a lattice-normed space over atomless vector lattice to an atomic lattice ...
D. T. Dzadzaeva, M. A. Pliev
openalex   +4 more sources

Narrow Orthogonally Additive Operators on Lattice-Normed Spaces [PDF]

open access: greenSiberian Mathematical Journal, 2015
The aim of this article is to extend results of M.~Popov and second named author about orthogonally additive narrow operators on vector lattices. The main object of our investigations are an orthogonally additive narrow operators between lattice-normed spaces.
Xiao Chun Fang, Marat Pliev
openalex   +7 more sources

An estimate for narrow operators on $$L^p([0, 1])$$ [PDF]

open access: hybridArchiv der Mathematik, 2020
AbstractWe prove a theorem, which generalises C. Franchetti’s estimate for the norm of a projection onto a rich subspace of $$L^p([0, 1])$$ L p ( [
Eugene Shargorodsky, Teo Sharia
openalex   +3 more sources

On sums of narrow and compact operators

open access: hybridPositivity, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
O. Fotiy   +3 more
openalex   +3 more sources

Narrow operators on vector-valued sup-normed spaces [PDF]

open access: bronzeIllinois Journal of Mathematics, 2002
19 ...
Dmitriy Bilik   +4 more
openalex   +5 more sources

Narrow and $\ell_2$-strictly singular operators from $L_p$ [PDF]

open access: greenIsrael Journal of Mathematics, 2012
In the first part of the paper we prove that for $2 < p, r < \infty$ every operator $T: L_p \to \ell_r$ is narrow. This completes the list of sequence and function Lebesgue spaces $X$ with the property that every operator $T:L_p \to X$ is narrow.
Volodymyr Mykhaylyuk   +3 more
openalex   +4 more sources

Domination Problem for Narrow Orthogonally Additive Operators [PDF]

open access: greenPositivity, 2015
12 pages. arXiv admin note: text overlap with arXiv:1309.6074.
Marat Pliev
openalex   +4 more sources

Narrow operators on lattice-normed spaces [PDF]

open access: greenOpen Mathematics, 2011
Abstract The aim of this article is to extend results of Maslyuchenko, Mykhaylyuk and Popov about narrow operators on vector lattices. We give a new definition of a narrow operator, where a vector lattice as the domain space of a narrow operator is replaced with a lattice-normed space. We prove that every GAM-compact (bo)-norm continuous
Marat Pliev
openalex   +5 more sources

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