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Displaying 21 – 40 of 51

Complétude des noyaux reproduisants dans les espaces modèles

Emmanuel Fricain (2002)

Annales de l’institut Fourier

Soit ${(λ_{n})}_{n \geq 1}$ une suite de Blaschke du disque unité $𝔻$ et $Θ$ une fonction intérieure. On suppose que la suite de noyaux reproduisants ${(k_{Θ} (z, λ_{n}) : = \frac{1 - \bar{Θ (λ_{n})} Θ (z)}{1 - \bar{λ_{n}} z})}_{n \geq 1}$ est complète dans l’espace modèle $K_{Θ}^{p} : = H^{p} \cap Θ \bar{H_{0}^{p}}$ , $1 < p < + \infty$ . On étudie, dans un premier temps, la stabilité de cette propriété de complétude, à la fois sous l’effet de perturbations des fréquences ${(λ_{n})}_{n \geq 1}$ mais également sous l’effet de perturbations de la fonction $Θ$ . On retrouve ainsi un certain nombre de résultats classiques sur les systèmes d’exponentielles. Puis, si on suppose de plus que la suite ...

Complex symmetric weighted composition operators on the Hardy space

Cao Jiang, Shi-An Han, Ze-Hua Zhou (2020)

Czechoslovak Mathematical Journal

This paper identifies a class of complex symmetric weighted composition operators on $H^{2} (𝔻)$ that includes both the unitary and the Hermitian weighted composition operators, as well as a class of normal weighted composition operators identified by Bourdon and Narayan. A characterization of algebraic weighted composition operators with degree no more than two is provided to illustrate that the weight function of a complex symmetric weighted composition operator is not necessarily linear fractional.

Composition operators and multiplication operators on weighted spaces of analytic functions.

Manhas, J.S. (2007)

International Journal of Mathematics and Mathematical Sciences

Composition operators and the Hilbert matrix

E. Diamantopoulos, Aristomenis Siskakis (2000)

Studia Mathematica

The Hilbert matrix acts on Hardy spaces by multiplication with Taylor coefficients. We find an upper bound for the norm of the induced operator.

Composition operators between generally weighted Bloch spaces of polydisk.

Li, Haiying, Liu, Peide, Wang, Maofa (2007)

JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]

Composition operators between generally weighted Bloch spaces and $Q_{log}^{q}$ space.

Li, Haiying, Liu, Peide (2008)

Banach Journal of Mathematical Analysis [electronic only]

Composition operators from the Bloch space into the spaces $Q_{T}$ .

Wu, Pengcheng, Wulan, Hasi (2003)

International Journal of Mathematics and Mathematical Sciences

Composition operators on Musielak-Orlicz spaces of Bochner type

Kuldip Raj, Sunil K. Sharma (2012)

Mathematica Bohemica

The invertible, closed range, compact, Fredholm and isometric composition operators on Musielak-Orlicz spaces of Bochner type are characterized in the paper.

Composition operators on vector-valued Hardy spaces.

S. D. Sharma, U. Bhanu (1999)

Extracta Mathematicae

Compositions of operator ideals and their regular hulls

F. Oertel (1995)

Acta Universitatis Carolinae. Mathematica et Physica

Conditional multipliers and essential norm of $u C_{ϕ}$ between $L^{p}$ spaces.

Jabbarzadeh, M.R. (2010)

Banach Journal of Mathematical Analysis [electronic only]

Connection between the algebra of kernels on the sphere and the Volterra algebra on the one-sheeted hyperboloid : holomorphic “perikernels”

J. Bros, G.A. Viano (1992)

Bulletin de la Société Mathématique de France

Constructing One-Parameter Transformations on White Noise Functions in Terms of Equicontinuous Generators.

Nobuaki Obata (1997)

Monatshefte für Mathematik

Continuité sur les espaces de Besov des opérateurs définis par des intégrales singulières

Pierre-Gilles Lemarie (1985)

Annales de l'institut Fourier

On donne un critère très simple de continuité des opérateurs définis par des intégrales singulières sur les espaces de Besov homogènes ${\dot{B}}_{p, q}^{s}$ pour $0 < s < 1$ . Quelques exemples, utilisant notamment l’opérateur de paraproduit, illustrent ensuite l’emploi de ce critère.

Continuité sur les espaces de Hölder et de Sobolev des opérateurs définis par des intégrales singulières

Y. Meyer (1983/1984)

Séminaire Équations aux dérivées partielles (Polytechnique)

Continuity for some multilinear operators of integral operators on Triebel-Lizorkin spaces.

Liu, Lanzhe (2004)

International Journal of Mathematics and Mathematical Sciences

Continuity of Pseudo-differential Operators on Bessel And Besov Spaces

Moussai, Madani (2001)

Serdica Mathematical Journal

We study the continuity of pseudo-differential operators on Bessel potential spaces Hs|p (Rn ), and on the corresponding Besov spaces B^(s,q)p (R ^n). The modulus of continuity ω we use is assumed to satisfy j≥0, ∑ [ω(2−j )Ω(2j )]2 < ∞ where Ω is a suitable positive function.

Currently displaying 21 – 40 of 51

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Displaying 21 – 40 of 51

Complétude des noyaux reproduisants dans les espaces modèles

Complex symmetric weighted composition operators on the Hardy space

Composition operators and multiplication operators on weighted spaces of analytic functions.

Composition operators and the Hilbert matrix

Composition operators between generally weighted Bloch spaces of polydisk.

Composition operators between generally weighted Bloch spaces and $Q_{log}^{q}$ space.

Composition operators from the Bloch space into the spaces $Q_{T}$ .

Composition operators on Musielak-Orlicz spaces of Bochner type

Composition operators on vector-valued Hardy spaces.

Compositions of operator ideals and their regular hulls

Conditional multipliers and essential norm of $u C_{ϕ}$ between $L^{p}$ spaces.

Connection between the algebra of kernels on the sphere and the Volterra algebra on the one-sheeted hyperboloid : holomorphic “perikernels”

Constructing One-Parameter Transformations on White Noise Functions in Terms of Equicontinuous Generators.

Continuité sur les espaces de Besov des opérateurs définis par des intégrales singulières

Continuité sur les espaces de Hölder et de Sobolev des opérateurs définis par des intégrales singulières

Continuity for some multilinear operators of integral operators on Triebel-Lizorkin spaces.

Continuity of Pseudo-differential Operators on Bessel And Besov Spaces

Continuity of superposition operators on $w_{0}$ and $W_{0}$

Contractive operators of certain spaces

Contractive projections on the fixed point set of $L_{\infty}$ contractions

Currently displaying 21 – 40 of 51