Results 51 to 60 of about 4,469,777 (359)
Isometric multiplication operators and weighted composition operators of BMOA
Journal of Inequalities and Applications, 2021 Let u be an analytic function in the unit disk D $\mathbb{D}$ and φ be an analytic self-map of D $\mathbb{D}$ . We give characterizations of the symbols u and φ for which the multiplication operator M u $M_{u}$ and the weighted composition operator M u ,
Ligang Geng
doaj +1 more source
Weighted composition operator on the Fock space
, 2007 We characterize the boundedness and compactness of a weighted composition operator on the Fock space. Our results use a certain integral transform. We also estimate the essential norm of a weighted compositon operator. The result could be extended to the
Sei‐ichiro Ueki
semanticscholar +1 more source
Spectrum of a compact weighted composition operator
, 2006 For Ψ analytic in the open unit disk and φ an analytic map from the unit disk into itself, the weighted composition operator C Ψ,φ is the operator on the weighted Hardy space H 2 (β) given by (C Ψ,φf )(z) = Ψ(z)f(φ(z)).
Gajath Gunatillake
semanticscholar +1 more source
The Composite Operator Method (COM) [PDF]
, 2011 Strongly Correlated Systems: Theoretical Methods, Springer Series in Solid-State Sciences, Vol. 171 (2012) [ISBN 978-3-642-21830-9]
AVELLA, Adolfo, MANCINI, Ferdinando
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On compactness of the difference of composition operators [PDF]
Journal of Mathematical Analysis and Applications, 2004 AbstractLet φ and ψ be analytic self-maps of the unit disc, and denote by Cφ and Cψ the induced composition operators. The compactness and weak compactness of the difference T=Cφ−Cψ are studied on Hp spaces of the unit disc and Lp spaces of the unit circle. It is shown that the compactness of T on Hp is independent of p∈[1,∞).
Nieminen, Pekka J., Saksman, Eero
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Composition and multiplication operators between Orlicz function spaces
Journal of Inequalities and Applications, 2016 Composition operators and multiplication operators between two Orlicz function spaces are investigated. First, necessary and sufficient conditions for their continuity are presented in several forms.
Tadeusz Chawziuk +4 more
doaj +1 more source
, 2005 An approximation Ansatz for the operator solution, $U(z',z)$, of a hyperbolic first-order pseudodifferential equation, $\d_z + a(z,x,D_x)$ with $\Re (a) \geq 0$, is constructed as the composition of global Fourier integral operators with complex phases ...
Rousseau, Jerome Le
core +4 more sources
Regularity of the composition operator in spaces of Hölder functions
, 1998 We study the regularity of the composition operator $((f, g)\to g \circ f)$ in spaces of Holder differentiable functions. Depending on the smooth norms used to topologize $f, g$ and their composition, the operator has different differentiability ...
R. Llave, R. Obaya
semanticscholar +1 more source
Hypercyclic Composition Operators
Journal of Vasyl Stefanyk Precarpathian National University, 2015 In this paper we give survey of hypercyclic composition operators. In pacticular,we represent new classes of hypercyclic composition operators on the spaces of analyticfunctions
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Composite operators in asymptotic safety [PDF]
Physical Review D, 2017 38 ...
Carlo Pagani, Martin Reuter
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