Results 11 to 20 of about 77,819 (216)

The essential spectrum, norm, and spectral radius of abstract multiplication operators

open access: yesConcrete Operators, 2023
Let EE be a complex Banach lattice and TT is an operator in the center Z(E)={T:∣T∣≤λIfor someλ}Z\left(E)=\left\{T:| T| \le \lambda I\hspace{0.33em}\hspace{0.1em}\text{for some}\hspace{0.1em}\hspace{0.33em}\lambda \right\} of EE. Then, the essential norm ‖
Schep Anton R.
doaj   +1 more source

Norms of a Product of Integral and Composition Operators between Some Bloch-Type Spaces

open access: yesAxioms, 2023
We present some formulas for the norm, as well as the essential norm, of a product of composition and an integral operator between some Bloch-type spaces of analytic functions on the unit ball, in terms of given symbols and weights.
Stevo Stević
doaj   +1 more source

Essential Norm of the Weighted Composition Operators Between Growth Space [PDF]

open access: yesSahand Communications in Mathematical Analysis
For $\alpha>0$, the growth space $\mathcal{A}^{-\alpha}$ is the space of all function $f\in H(\DD)$ such that $$\left\|f\right\|_{\mathcal{A}^{-\alpha}}=\sup_{z\in\DD}\left(1-\left|z\right|^2\right)^\alpha \left|f(z)\right|
Ebrahim Abbasi, Mostafa Hassanlou
doaj   +1 more source

Essential norm of an integral-type operator from ω-Bloch spaces to μ-Zygmund spaces on the unit ball [PDF]

open access: yesOpuscula Mathematica, 2018
In this paper, we give an estimate for the essential norm of an integral-type operator from \(\omega\)-Bloch spaces to \(\mu\)-Zygmund spaces on the unit ball.
Juntao Du, Xiangling Zhu
doaj   +1 more source

Common Law legal norm [PDF]

open access: yesStrani pravni život, 2021
In this paper the author attempts to define the otherness of common law legal norm in relation to that of a civilian one, through the analysis of differences identified in their formation and language.
Šite Damir A.
doaj   +1 more source

Essential supremum norm differentiability

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1985
The points of Gateaux and Fréchet differentiability in L∞(μ,X) are obtained, where (Ω,∑,μ) is a finite measure space and X is a real Banach space. An application of these results is given to the space B(L1(μ,ℝ),X) of all bounded linear operators from L1 ...
I. E. Leonard, K. F. Taylor
doaj   +1 more source

Inequalities Involving Essential Norm Estimates of Product-Type Operators

open access: yesJournal of Mathematics, 2021
Consider an open unit disk D=z∈ℂ ...
Manisha Devi, Ajay K. Sharma, Kuldip Raj
doaj   +1 more source

Essential norm of generalized weighted composition operators from the Bloch space to the Zygmund space

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we give some estimates of the essential norm for generalized weighted composition operators from the Bloch space to the Zygmund space. Moreover, we give a new characterization for the boundedness and compactness of the operator.
Qinghua Hu   +3 more
doaj   +1 more source

Mediating role of perceived service quality between behavioral characteristics, security risk and internet banking usage [PDF]

open access: yesBanks and Bank Systems, 2022
Internet banking is an essential component of banking. However, most bank customers in Nigeria do not make optimal use of the service. The paper investigates the influence of behavioral characteristics, security risk and perceived service quality on ...
Salome O. Ighomereho   +1 more
doaj   +1 more source

Essential Norm of t-Generalized Composition Operators from F(p, q, s) to Iterated Weighted-Type Banach Space

open access: yesMathematics
In this work, we characterize the boundedness of t-generalized composition operators from F(p, q, s) spaces to iterated weighted-type Banach space. We also provide estimates of the norm and the essential norm of t-generalized composition operators from F(
Shams Alyusof, Nacir Hmidouch
doaj   +1 more source

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