Results 31 to 40 of about 3,235,619 (333)

Functions of self‐adjoint operators in ideals of compact operators [PDF]

open access: yesJournal of the London Mathematical Society, 2015
For self‐adjoint operators A,B , a bounded operator J , and a function f:R→C , we obtain bounds in quasi‐normed ideals of compact operators for the difference f(A)J−Jf(B) in terms of the operator AJ−JB .
A. Sobolev
semanticscholar   +1 more source

Lupaş post quantum Bernstein operators over arbitrary compact intervals

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2021
This paper deals with Lupaş post quantum Bernstein operators over arbitrary closed and bounded interval constructed with the help of Lupaş post quantum Bernstein bases.
A. Khan   +3 more
doaj   +1 more source

Smooth, Compact Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1979
It is a result of Holub’s [Math. Ann. 201 (1973), 157-163], that for T a compact operator on a real Hilbert space, T is smooth
openaire   +1 more source

Continuous linear operators on Orlicz-Bochner spaces

open access: yesOpen Mathematics, 2019
Let (Ω, Σ, μ) be a complete σ-finite measure space, φ a Young function and X and Y be Banach spaces. Let Lφ(X) denote the corresponding Orlicz-Bochner space and Tφ∧$\begin{array}{} \displaystyle \mathcal T^\wedge_\varphi \end{array}$ denote the finest ...
Nowak Marian
doaj   +1 more source

Properties of Fuzzy Compact Linear Operators on Fuzzy Normed Spaces

open access: yesمجلة بغداد للعلوم, 2019
In this paper the definition of fuzzy normed space is recalled and its basic properties. Then the definition of fuzzy compact operator from fuzzy normed space into another fuzzy normed space is introduced after that the proof of an operator is fuzzy ...
Kider et al.
doaj   +1 more source

Analytic Families of Self-Adjoint Compact Operators Which Commute with Their Derivative

open access: yesCommunications in Advanced Mathematical Sciences, 2020
Spectral properties of analytic families of compact operators on a Hilbert space are studied. The results obtained are then used to establish that an analytic family of self-adjoint compact operators on a Hilbert space $\mathcal{H},$ which commute with ...
Abdelaziz Maouche
doaj   +1 more source

Compactness properties of operators dominated by AM-compact operators [PDF]

open access: yesProceedings of the American Mathematical Society, 2007
Based on work of Fremlin, the authors study the domination problem for the class of AM-compact oeprators. Let \(E\) be an arbitrary Banach lattice and let \(S\) and \(T\) be two operators from \(E\) into \(E\) such that \(0\leq S\leq T\) and \(T\) is AM-compact. Then it is shown that \(S^2\) is AM-compact.
Aqzzouz, Belmesnaoui   +2 more
openaire   +2 more sources

Limitedly L-weakly compact operators [PDF]

open access: yes, 2023
We introduce new class of limitedly L-weakly compact operators from a Banach space to a Banach lattice. This class is a proper subclass of the Bourgain-Diestel operators and it contains properly the class of L-weakly compact operators.
Alpay, Safak   +2 more
core   +1 more source

The Gâteaux derivative and orthogonality in C∞

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2012
The general problem in this paper is minimizing the C∞− norm of suitable affine mappings from B(H) to C∞, using convex and differential analysis (Gateaux derivative) as well as input from operator theory.
Mecheri Salah, Mecheri Hacene
doaj   +1 more source

Weighted Composition Operators Between Extended Lipschitz Algebras on Compact Metric Spaces [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2020
‎In this paper, we provide a complete description of weighted composition operators between extended Lipschitz algebras on compact metric spaces. We give necessary and sufficient conditions for the injectivity and the sujectivity of these operators.
Reyhaneh Bagheri, Davood Alimohammadi
doaj   +1 more source

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