Results 51 to 60 of about 868 (84)

Boundedness, compactness and Schatten-class membership of weighted composition operators

, 2009
The boundedness and compactness of weighted composition operators on the Hardy space ${\mathcal H}^2$ of the unit disc is analysed. Particular reference is made to the case when the self-map of the disc is an inner function.
C.C. Cowen, D.H. Luecking, E. A. Gallardo-Gutiérrez, F. Forelli, G. Gunatillake, I. Chalendar, J. R. Partington, J.B. Garnett, J.E. Littlewood, J.H. Shapiro, K. Hoffman, M. Jury, M.D. Contreras, M.D. Contreras, P. Ahern, P.L. Duren, R. Kumar, T. Kriete, V. Matache, W.W. Hastings, Z. C̆uc̆ković, Z. Harper, Z. Harper   +22 more
core   +2 more sources

The compactness of the sum of weighted composition operators on the ball algebra

Journal of Inequalities and Applications, 2011
In this paper, we investigate the compactness of the sum of weighted composition operators on the unit ball algebra, and give the characterization of compact differences of two weighted composition operators on the ball algebra.
Tong Ce-Zhong, Zhou Ze-Hua
doaj  

Universality on higher order Hardy spaces [PDF]

, 2005
We prove a Seidel-Walsh-type theorem about universality of a sequence of derivation-composition operators generated by automorphisms of the unit disk in the setting of the higher order Hardy spaces.
Bernal González, Luis, Bonilla Ramírez, Antonio Lorenzo, Calderón Moreno, María del Carmen   +2 more
core  

Weighted composition operators on bicomplex Lorentz spaces with their characterization and properties

Demonstratio Mathematica
This article presents a characterization of non-singular measurable transformation, denoted as TT, mapping from Ω\Omega to itself, along with bicomplex-valued BC{\mathbb{BC}}-measurable function uu defined on Ω\Omega , which induces a weighted ...
Eryılmaz İlker
doaj   +1 more source

Some Hardy's inequalities on conformable fractional calculus

Demonstratio Mathematica
In this article, we will demonstrate some Hardy’s inequalities by utilizing Hölder inequality, integration by parts, and chain rule of the conformable fractional calculus.
AlNemer Ghada, Saker Samir H., Ashry Gehad M., Zakarya Mohammed, Rezk Haytham M., Kenawy Mohammed R.   +5 more
doaj   +1 more source

On the eleventh question of Allen Shields

Fixed Point Theory and Applications, 2011
In this article, we will give sufficient conditions for the boundedness of the analytic projection on the set of multipliers of the formal Laurent series spaces. This answers a question that has been raised by A. L. Shields.
Kashkooly Ali, Yousefi Bahmann
doaj  

Multiplication operators on the space of functions of bounded variation

Demonstratio Mathematica, 2017
In this paper,we study the properties of the multiplication operator acting on the bounded variation space BV[0, 1]. In particular,we show the existence of non-null compact multiplication operators on BV[0, 1] and non-invertible Fredholm multiplication ...
Astudillo-Villalba Franklin R., Ramos-Fernández Julio C.   +1 more
doaj   +1 more source

A new family of multivalent functions defined by certain forms of the quantum integral operator

Demonstratio Mathematica
In this work, using the concepts of qq-calculus, we first define the qq-Jung-Kim-Srivastava and qq-Bernardi integral operators for multivalent functions. Then, we use these operators to establish the generalized integral operator ℬq,p−m−λf(z){{\mathcal{ {
Khan Ajmal, Al-shbeil Isra, Shatarah Amani, Alrayes Norah Mousa, Khan Shahid, ul Haq Wasim   +5 more
doaj   +1 more source

Weighted differentiation composition operators from the logarithmic Bloch space to the weighted-type space

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
The boundedness of the weighted differentiation composition opera- tor from the logarithmic Bloch space to the weighted-type space is characterized in terms of the sequence (zn)n∈N0.
Li Songxiao, Stević Stevo
doaj   +1 more source

High temperature inhibits photosynthesis of chrysanthemum (Chrysanthemum morifolium Ramat.) seedlings more than relative humidity. [PDF]

Front Plant Sci, 2023
Zhou J, Jiang X, Agathokleous E, Lu X, Yang Z, Li R.   +5 more
europepmc   +1 more source