Results 21 to 30 of about 8,171 (292)

Toeplitz-Superposition Operators on Analytic Bloch Spaces [PDF]

open access: yesJournal of Function Spaces, 2021
The important purpose of this current work is to study a new class of operators, the so-called Toeplitz-superposition operators as an expansion of the weighted known composition operators, induced by such continuous entire functions mapping on bounded specific sets.
M. A. Bakhit, A. El-Sayed Ahmed
openaire   +2 more sources

Continuity properties of the superposition operator [PDF]

open access: yesJournal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1989
AbstractVarious continuity conditions (in norm, in measure, weakly etc.) for the nonlinear superposition operatorF x(s) =f(s, x(s)) between spaces of measurable functions are established in terms of the generating functionf = f(s, u). In particular, a simple proof is given for the fact that, ifFis continuous in measure, thenfmay be replaced by a ...
Jürgen Appell, Pjotr P. Zabrejko
openaire   +1 more source

Coherent and incoherent superposition of transition matrix elements of the squeezing operator

open access: yesNew Journal of Physics, 2022
We discuss the general matrix elements of the squeezing operator between number eigenstates of a harmonic oscillator (which may also represent a quantized mode of the electromagnetic radiation).
Sándor Varró
doaj   +1 more source

On Nonlinear Vekua Type Equations

open access: yesNonlinear Analysis, 2006
Nonlinear Vekua-Bers type differential equations are studied on the base of certain methods of nonlinear analysis. A survey of recent results in the area is presented.
S. V. Rogosin
doaj   +1 more source

On Generalized Step-Functions and Superposition Operators [PDF]

open access: yesgmj, 2004
Abstract For a given σ-ideal of sets, the notion of a generalized stepfunction is introduced and investigated in connection with the problem of sup-measurability of certain functions of two variables, regarded as superposition operators.
openaire   +2 more sources

Boundedness and continuity of superposition operator on Er(p) and Fr(p) [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2002
Let X ∈ {Er(p)V , Fr(p)}, in this research, necessary and sufficient conditions are given for superposition operator to act from X into the space l1. Moreover, necessary and sufficient conditions are obtained for superposition operator acting from X into
Assa-aree Sama-ae
doaj  

Analytic Morrey Spaces and Bloch-Type Spaces

open access: yesJournal of Function Spaces, 2018
This paper is devoted to characterizing the boundedness of the Riemann-Stieltjes operators from analytic Morrey spaces to Bloch-type spaces. Moreover, the boundedness of the superposition operator and weighted composition operator on analytic Morrey ...
Ofori Samuel, Jianfei Wang, Yile Zhao
doaj   +1 more source

Formation of required distributions on the basis of decomposition by vortex eigen functions of a bounded non-paraxial propagation operator [PDF]

open access: yesКомпьютерная оптика, 2019
The solution of the problem of overcoming the diffraction limit based on the representation of an optical signal in the form of a superposition of communication modes matched with the vortex eigenfunctions of a bounded (in the object and spectral regions)
Svetlana Khonina   +2 more
doaj   +1 more source

Merging probabilistic models of navigation: the Bayesian Map and the Superposition operator [PDF]

open access: yes, 2005
voir basilic : http://emotion.inrialpes.fr/bibemotion/2005/DBM05/International audienceThis paper deals with the probabilistic modeling of space, in the context of mobile robot navigation.
J. Diard   +5 more
core   +1 more source

Bounds on positive operator-valued measure based coherence of superposition

open access: yes, 2023
Quantum coherence is a fundamental feature of quantum physics and plays a significant role in quantum information processing. By generalizing the resource theory of coherence from von Neumann measurements to positive operator-valued measures (POVMs ...
Li, Bo   +4 more
core   +1 more source

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