Results 21 to 30 of about 74,507 (265)

Inequalities involving norm and essential norm of weighted composition operators [PDF]

Journal of Mathematical Inequalities, 2017
Summary: We characterize the boundedness and compactness of the weighted composition operator acting from the weighted Bergman space \(\mathcal{A}^p(\sigma)\) to the Zygmund-type space \(\mathcal{Z}_\nu\), where \(\sigma\) is an admissible weight and \(\nu\) is a normal weight. Some upper and lower bounds for the norm and essential norm of the operator
Sharma, Ajay K., Bhat, Ambika, Chugh, Renu, Subhadarsini, Elina   +3 more
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ESSENTIAL NORM OF THE PULL BACK OPERATOR

Korean Journal of Mathematics, 2016
Summary: We obtain some estimations of the essential norm of a pull back operator induced by quasi-symmetric homeomorphisms. As a corollary, we deduce the compactness criterion of this operator.
Shuan, Tang, Chong, Wu
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Essential norm of composition operators on Harmonic Bloch spaces

Filomat, 2022
In this paper we characterize essential norm of composition operators on the spaces of Harmonic Bloch functions. We obtain some upper and lower bounds for the essential norm of composition operators between Harmonic Bloch function spaces. In some cases we find exact value of the essential norm such as in Theorems 2.7 and 2.11. These results
Estaremi, Y., Esmaeili, S., Ebadian, A.
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Essential norm of generalized weighted composition operators from the Bloch space to the Zygmund space

Journal 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, Yafeng Shi, Yecheng Shi, Xiangling Zhu   +3 more
doaj   +1 more source

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

Banks 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, Ademola S. Sajuyigbe   +1 more
doaj   +1 more source

Super Poincaré Inequalities, Orlicz Norms and Essential Spectrum [PDF]

Potential Analysis, 2010
We prove some results about the super Poincar inequality (SPI) and its relation to the spectrum of an operator: we show that it can be alternatively written with Orlicz norms instead of L1 norms, and we use this to give an alternative proof that a bound on the bottom of the essential spectrum implies a SPI.
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Norm and Essential Norm of a Weighted Composition Operator on the Bloch Space [PDF]

Integral Equations and Operator Theory, 2017
We give some new estimates for the norm and essential norm of a weighted composition operator on the Bloch space. As corollaries, we obtain some new characterizations of the boundedness and compactness of a weighted composition operator on the Bloch space.
Xiaosong Liu, Songxiao Li
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Corrigendum to: Essential normality, essential norms and hyperrigidity

, 2015
In our paper "Essential normality, essential norms and hyperrigidity" we claimed that the restriction of the identity representation of a certain operator system (constructed from a polynomial ideal) has the unique extension property, however the justification we gave was insufficient.
Kennedy, Matthew, Shalit, Orr
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Essential norm of the differential operator [PDF]

Operators and Matrices, 2019
This paper is a follow-up contribution to our work [10] where we studied some spectral properties of the differential operator $D$ acting between generalized Fock spaces $\mathcal{F}_{(m,p)}$ and $\mathcal{F}_{(m,q)}$ when both exponents $p$ and $q$ are finite.
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Essential Norm of t-Generalized Composition Operators from F(p, q, s) to Iterated Weighted-Type Banach Space

Mathematics
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