Results 221 to 230 of about 13,906 (254)

Linear Combinations of Composition Operators on the Fock-Sobolev Spaces

Potential Analysis, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hyungwoon Koo, Hong Rae Cho, Boo Rim Choe   +2 more
exaly   +3 more sources

On the convergence of sequences of positive linear operators towards composition operators

Banach Journal of Mathematical Analysis
Let \(F(X)\) be the linear space of real-valued functions on a metric space \((X,d)\), \(C_b(X)\) be the space of continuous bounded real-valued functions on \(X\), \(\left (d_x(\cdot)\right)_{x\in X}\) be a family of functions in \(F(X)\) such that for each \(x\in X\), we have \(d_x(y)=d(x,y)\) for \(y\in X\).
Francesco Altomare
exaly   +3 more sources

Compact linear combinations of composition operators induced by linear fractional maps

Mathematische Zeitschrift, 2015
Let \(\Phi:\mathbb B_n\to \mathbb B_m\) be a holomorphic map from the unit ball in \(\mathbb C^n\) into the unit ball of \(\mathbb C^m\). It was shown that the composition operator \(C_\Phi(f)= f\circ \Phi\) is not necessarily bounded on Hardy spaces by \textit{C. C. Cowen} and \textit{B. D.
Hyungwoon Koo, Jongho Yang, Maofa Wang   +2 more
exaly   +3 more sources

Linear Combination of Composition Operators on Bergman and Korenblum Spaces

Potential Analysis, 2021
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Guo, Xin, Wang, Maofa
openaire   +2 more sources

On the Composition and Decomposition of Positive Linear Operators (V)

Results in Mathematics, 2010
This note discusses the indecomposability and decomposability of certain operators occurring frequently in approximation theory: piecewise linear interpolation and Bernsteintype operators. The second topic includes the central (absolute) moments of the composition of two operators and their asymptotic behavior.
Heiner Gonska, Ioan Raşa
openaire   +3 more sources

Linear Fractional Composition Operators Over the Half-Plane

Integral Equations and Operator Theory, 2018
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Boo Rim Choe, Hyungwoon Koo, Wayne Smith
openaire   +1 more source

Linear fractional composition operators on H2

Integral Equations and Operator Theory, 1988
Let \(\phi\) be an analytic function mapping the unit disk D into itself. The composition operator \(C_{\phi}\) on \(H_ 2\) is defined by \(C_{\phi}f=f\circ \phi\). In this paper the author studies such composition operators when \(\phi\) is a linear fractional transformation.
openaire   +1 more source

Composition of linear canonical Hankel pseudo-differential operators

Asian-European Journal of Mathematics, 2023
In this paper, the study of linear canonical Hankel pseudo-differential operators has been extended to Sobolev-type spaces. Two versions of pseudo-differential operators involving linear canonical Hankel transformation are defined. We have shown that the pseudo-differential operators and composition of pseudo-differential operators are bounded in ...
Ujjawala Singh, Tanuj Kumar
openaire   +1 more source

Complete continuity of linear combinations of composition operators

Archiv der Mathematik, 2010
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Nguyen Quang Dieu, Ohno, Shûichi
openaire   +2 more sources

Regularizability of inverse operators of linear injections and their compositions

Siberian Mathematical Journal, 1988
See the review in Zbl 0658.47004.
Domanskij, E. N., Ostrovskij, M. I.
openaire   +1 more source