Results 21 to 30 of about 9,824 (312)

Multiplication Operator with BMO Symbols and Berezin Transform

open access: yesJournal of Function Spaces, 2015
We discuss multiplication operator with a special symbol on the weighted Bergman space of the unit ball. We give the necessary and sufficient conditions for the compactness of multiplication operator on the weighted Bergman space of the unit ball.
Xue Feng   +4 more
doaj   +1 more source

Multiplication operators on the space of functions of bounded variation

open access: yesDemonstratio 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.   +1 more
doaj   +1 more source

On (P*-N) quasi normal operators Of order "n" In Hilbert space

open access: yesAl-Mustansiriyah Journal of Science, 2021
Through this paper, we submitted  some types of quasi normal operator is called be (k*-N)- quasi normal operator of order n defined on a Hilbert space H, this concept is generalized of some kinds of  quasi normal operator appear recently form most ...
Salim Dawood M., Jaafer Hmood Eidi
doaj   +1 more source

Spectrum of One-Dimensional Potential Perturbed by a Small Convolution Operator: General Structure

open access: yesMathematics, 2023
We consider an operator of multiplication by a complex-valued potential in L2(R), to which we add a convolution operator multiplied by a small parameter. The convolution kernel is supposed to be an element of L1(R), while the potential is a Fourier image
D. I. Borisov   +2 more
doaj   +1 more source

The spectrum generated by s-numbers and pre-quasi normed Orlicz-Cesáro mean sequence spaces

open access: yesOpen Mathematics, 2020
In this article, we study some topological properties of the multiplication operator on Orlicz-Cesáro mean sequence spaces equipped with the pre-quasi norm and the pre-quasi operator ideal constructed by this sequence space and s-numbers.
Bakery Awad A.
doaj   +1 more source

Reducing subspaces for multiplication operators on the Dirichlet space through local inverses and Riemann surfaces

open access: yesComplex Manifolds, 2017
This paper gives a full characterization of the reducing subspaces for the multiplication operator Mϕ on the Dirichlet space with symbol of finite Blaschke product ϕ of order 5I 6I 7.
Gu Caixing, Luo Shuaibing, Xiao Jie
doaj   +1 more source

Eigenvalues of s-type operators on C ( p ) $C(p)$ equipped with a pre-quasi norm

open access: yesJournal of Inequalities and Applications, 2020
We investigate some new topological properties of the multiplication operator on C ( p ) $C(p)$ defined by Lim (Tamkang J. Math. 8(2):213–220, 1977) equipped with the pre-quasi-norm and the pre-quasi-operator ideal formed by this sequence space and s ...
Awad A. Bakery, Elsayed A. E. Mohamed
doaj   +1 more source

Prequasiideal of the type weighted binomial matrices in the Nakano sequence space of soft functions with some applications

open access: yesJournal of Inequalities and Applications, 2022
Consider the space of weighted binomial matrices in the Nakano sequence space of soft functions. We have offered some geometric and topological structures of the multiplication operator acting on this space and its associated operator ideal.
Meshayil M. Alsolmi   +3 more
doaj   +1 more source

The multiple interpolation de la Vallée Poussin problem

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2015
This article is concerned with the solving of multiple interpolation de La Vallée Poussin problem for generalized convolution operator. Particular ate tention is paid to the proving of the sequential sufficiency of the set of solutions of the generalized
Valentin V Napalkov, Aigul U Mullabaeva
doaj   +1 more source

Some Properties of Prequasi Normed Generalized de La Vallée Poussin’s Mean Sequence Space

open access: yesJournal of Function Spaces, 2020
In this article, we study some topological properties of the multiplication operator on generalized de La Vallée Poussin’s mean sequence space equipped with the prequasi norm and the prequasi operator ideal generated by s-numbers and this sequence space.
Awad A. Bakery, Mustafa M. Mohammed
doaj   +1 more source

Home - About - Disclaimer - Privacy