On the class operators.
Bachir, A., Segres, A. (2009)
International Journal of Open Problems in Computer Science and Mathematics. IJOPCM
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Displaying similar documents to “On the range and the kernel of the elementary operators .”
On the class operators.
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Mohamed Barraa, Mohamed Boumazgour (2001)
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Generalized derivations and -algebras: comments and some open problems.
Mecheri, Salah (2009)
International Journal of Open Problems in Computer Science and Mathematics. IJOPCM
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Aluthge transforms of -hyponormal operators.
Cheng, Junxiang, Yuan, Jiangtao (2011)
Annals of Functional Analysis (AFA) [electronic only]
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Distances between composition operators.
Valentin Matache (2007)
Extracta Mathematicae
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Composition operators C induced by a selfmap φ of some set S are operators acting on a space consisting of functions on S by composition to the right with φ, that is Cf = f º φ. In this paper, we consider the Hilbert Hardy space H on the open unit disk and find exact formulas for distances ||C - C|| between composition operators. The selfmaps φ and ψ involved in those formulas are constant, inner, or analytic selfmaps of the unit disk fixing the origin.
On some shift invariant integral operators, univariate case
George A. Anastassiou, Heinz H. Gonska (1995)
Annales Polonici Mathematici
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In recent papers the authors studied global smoothness preservation by certain univariate and multivariate linear operators over compact domains. Here the domain is ℝ. A very general positive linear integral type operator is introduced through a convolution-like iteration of another general positive linear operator with a scaling type function. For it sufficient conditions are given for shift invariance, preservation of global smoothness, convergence to the unit with rates, shape preserving...
Elementary operators and subhomogeneous -algebras. II.
Gogić, Ilja (2011)
Banach Journal of Mathematical Analysis [electronic only]
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AMD-numbers, compactness, strict singularity and the essential spectrum of operators.
Castejón, A., Corbacho, E., Tarieladze, V. (2002)
Georgian Mathematical Journal
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Solutions to a class of polynomially generalized Bers–Vekua equations using Clifford analysis
Min Ku, Uwe Kähler, Paula Cerejeiras (2012)
Archivum Mathematicum
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In this paper a class of polynomially generalized Vekua–type equations and of polynomially generalized Bers–Vekua equations with variable coefficients defined in a domain of Euclidean space are discussed. Using the methods of Clifford analysis, first the Fischer–type decomposition theorems for null solutions to these equations are obtained. Then we give, under some conditions, the solutions to the polynomially generalized Bers–Vekua equation with variable coefficients. Finally, we present...
On subnormal operators whose spectrum are multiply connected domains.
Carlsson, M. (2011)
The New York Journal of Mathematics [electronic only]
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