Results 51 to 60 of about 4,637,538 (347)

Volterra integral operator and essential norm on Dirichlet type spaces

open access: yesAIMS Mathematics, 2021
In this paper, we study the boundedness and essential norm of Volterra integral operator $ V_g $ and integral operator $ S_g $ on Dirichlet type spaces $ {\mathcal{D}_{K, \alpha}} $.
Liu Yang, Ruishen Qian
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

The essential norm of multiplication operators acting on Orlicz sequence spaces

open access: yes, 2020
We calculate the measure of non-compactness or the essential norm of the multiplication operator Mu acting on Orlicz sequence spaces lφ. As a consequence of our result, we obtain a known criteria for the compactness of multiplication operator acting on ...
J. Ramos-Fernández, M. Salas-Brown
semanticscholar   +1 more source

The essential norms of composition operators [PDF]

open access: yesGlasgow Mathematical Journal, 1992
Throughout the paper n denotes a fixed positive integer unless otherwise specified. Let B = Bn denote the open unit ball of ℂn and let S = Sn denote its boundary, the unit sphere. The unique rotation-invariant probability measure on 5 will be denoted by σ = σn. For n = l, we use more customary notations D = B1, T = S1 and dσ1= dθ/2π. The Hardy space on
openaire   +2 more sources

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

The essential norm of a composition operator on a planar domain [PDF]

open access: yesIllinois Journal of Mathematics, 1999
Let \(\Omega\) be a domain of the complex plane.
Fisher, Stephen D., Shapiro, Jonathan E.
openaire   +3 more sources

Essential norm of weighted composition operators between Bloch-type spaces in the open unit ball

open access: yesMathematical Inequalities & Applications, 2019
In this paper, we give an estimation for the essential norm of weighted composition operators between Bloch-type spaces in the open unit ball of Cn . Mathematics subject classification (2010): 47B33, 30H30.
Juntao Du, Xiangling Zhu
semanticscholar   +1 more source

Essential norm of weighted composition operators on Zygmund-type spaces with normal weight

open access: yes, 2018
In this paper, we investigate the boundedness, compactness and essential norm of weighted composition operators between Zygmund-type spaces with normal weight. Mathematics subject classification (2010): 47B33, 30H10.
Juntao Du, Songxiao Li, Yan ua Zhang
semanticscholar   +1 more source

Differences of weighted composition operators between the Fock spaces

open access: yes, 2017
We study some important topological properties such as boundedness, compactness and essential norm of differences of weighted composition operators between Fock spacesComment: 10 ...
Khoi, Le Hai, Tien, Pham Trong
core   +1 more source

Global existence and full regularity of the Boltzmann equation without angular cutoff [PDF]

open access: yes, 2010
We prove the global existence and uniqueness of classical solutions around an equilibrium to the Boltzmann equation without angular cutoff in some Sobolev spaces. In addition, the solutions thus obtained are shown to be non-negative and $C^\infty$ in all
A. Bobylev   +62 more
core   +5 more sources

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