Results 21 to 30 of about 10,154 (314)

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

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

Multiplication Operators and Dynamical Systems [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1992
AbstractLet X be a completely regular Hausdorff space, let V be a system of weights on X and let T be a locally convex Hausdorff topological vector space. Then CVb(X, T) is a locally convex space of vector-valued continuous functions with a topology generated by seminorms which are weighted analogues of the supremum norm.
Singh, R. K., Singh Manhas, Jasbir
openaire   +2 more sources

Recurrence and mixing recurrence of multiplication operators [PDF]

open access: yesMathematica Bohemica
Let $X$ be a Banach space, $\mathcal{B}(X)$ the algebra of bounded linear operators on $X$ and $(J, \|{\cdot}\|_J)$ an admissible Banach ideal of $\mathcal{B}(X)$.
Mohamed Amouch, Hamza Lakrimi
doaj   +1 more source

Corrections to “Deep Learning-Based Robust Automatic Modulation Classification for Cognitive Radio Networks”

open access: yesIEEE Access, 2021
In the above article [1], in Table 4, the operator * was used to represent frame sizes, which are 2 * 128 and 4 * 128. The correct operator should be a multiplication operator $\times $ for $2 \times 128$ and $4 \times 128$ .
Seung-Hwan Kim   +3 more
doaj   +1 more source

Multiplicative forms and Spencer operators [PDF]

open access: yesMathematische Zeitschrift, 2014
Motivated by our attempt to recast Cartan's work on Lie pseudogroups in a more global and modern language, we are brought back to the question of understanding the linearization of multiplicative forms on groupoids and the corresponding integrability problem.
Marius Crainic   +2 more
openaire   +3 more sources

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