Results 21 to 30 of about 850,915 (318)

Essential norm of generalized Hilbert matrix from Bloch type spaces to BMOA and Bloch space

open access: yesAIMS Mathematics, 2021
Let $ \mu $ be a positive Borel measure on the interval $ [0, 1) $. The Hankel matrix $ {\mathcal H}_\mu = (\mu_{n+k})_{n, k\geq 0} $ with entries $ \mu_{n, k} = \mu_{n+k} $ induces the operatoron the space of all analytic functions $ f(z) = \sum^\infty_{
Songxiao Li , Jizhen Zhou
doaj   +1 more source

Composition operators from harmonic $ \mathcal{H}^{\infty} $ space into harmonic Zygmund space

open access: yesAIMS Mathematics, 2023
This research paper sought to characterize the boundedness and compactness of composition operators from the space $ \mathcal{H}^{\infty} $ of bounded harmonic mappings into harmonic Zygmund space $ \mathcal{Z}_H $, on the open unit disk. Furthermore, we
Munirah Aljuaid, Mahmoud Ali Bakhit
doaj   +1 more source

Generalized Stević-Sharma type operators from derivative Hardy spaces into Zygmund-type spaces

open access: yesAIMS Mathematics, 2023
Let $ u, v $ be two analytic functions on the open unit disk $ {\mathbb D} $ in the complex plane, $ \varphi $ an analytic self-map of $ {\mathbb D} $, and $ m, n $ nonnegative integers such that $ m < n $.
Zhitao Guo , Jianyong Mu
doaj   +1 more source

Generalized Stević-Sharma operators from the minimal Möbius invariant space into Bloch-type spaces

open access: yesDemonstratio Mathematica, 2023
The aim of this study is to investigate the boundedness, essential norm, and compactness of generalized Stević-Sharma operator from the minimal Möbius invariant space into Bloch-type space.
Guo Zhitao
doaj   +1 more source

Sum of some product-type operators from mixed-norm spaces to weighted-type spaces on the unit ball

open access: yesAIMS Mathematics, 2022
Let $ u_{j} $ be the holomorphic functions on the open unit ball $ \mathbb{B} $ in $ \mathbb{C}^{n} $, $ j = \overline{0, m} $, $ \varphi $ a holomorphic self-map of $ \mathbb{B} $, and $ \Re^{j} $ the $ j $th iterated radial derivative operator. In this
Cheng-shi Huang   +2 more
doaj   +1 more source

A class of operator related weighted composition operators between Zygmund space [PDF]

open access: yesAUT Journal of Mathematics and Computing, 2021
Let $\mathbb {D}$ be the open unit disk in the complex plane $\mathbb{C}$ and $H(\mathbb{D})$ be the set of all analytic functions on $\mathbb{D}$. Let $u, v\in H(\mathbb{D})$ and $\varphi$ be an analytic self-map of $\mathbb{D}$.
Ebrahim Abbasi
doaj   +1 more source

Norm and essential norm of a weighted composition operator on the Bloch space [PDF]

open access: greenIntegral Equations and Operator Theory, 2015
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
openalex   +5 more sources

Essential pseudospectra and essential norms of band-dominated operators [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2016
39 pages; minor changes and ...
Hagger, Raffael   +2 more
openaire   +2 more sources

Against Essential Mental Normativity Again [PDF]

open access: yesDialogue, 2011
ABSTRACT: In a recent paper (2008), I presented two arguments against the thesis that intentional states are essentially normative. In this paper, I defend those arguments from two recent responses, one from Nick Zangwill in his (2010) and one from Daniel Laurier in the present volume, and offer improvements of my arguments in light of Laurier’s ...
openaire   +2 more sources

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

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