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Some new results concerning Schur multipliers and duality results between Bergman-Schatten and little Bloch spaces
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Mathematical Science.
2009 (English)Licentiate thesis, comprehensive summary (Other academic)
##### Abstract [en]

This Licentiate thesis consists of an introduction and three papers, which deal with some spaces of infinite matrices. In the introduction we give an overview of the area that serves as a frame for the rest of the thesis.In Paper 1 we introduce the space $B_w(\ell^2)$ of linear (unbounded) operators on $\ell^2$ which map decreasing sequences from $\ell^2$ into sequences from $\ell^2$ and we find some classes of operators belonging either to $B_w(\ell^2)$ or to the space of all Schur multipliers on $B_w(\ell^2)$.In Paper 2 we further continue the study of the space $B_w(\ell^p)$ in the range $1 <\infty$. In particular, we characterize the upper triangular positive matrices from $B_w(\ell^p)$.In Paper 3 we prove a new characterization of the Bergman-Schatten spaces $L_a^p(D,\ell^2)$, the space of all upper triangular matrices such that $\|A(\cdot)\|_{L^p(D,\ell^2)}<\infty$, where $\|A(r)\|_{L^p(D,\ell^2)}=\left(2\int_0^1\|A(r)\|^p_{C_p}rdr\right)^\frac{1}{p}.$This characterization is similar to that for the classical Bergman spaces. We also prove a duality between the little Bloch space and the Bergman-Schatten classes in the case of infinite matrices.

##### Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 2009. , p. 9
##### Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757
##### National Category
Mathematical Analysis
Mathematics
##### Identifiers
Local ID: 1fe59bb0-3003-11de-bd0f-000ea68e967bISBN: 978-91-86233-38-9 (print)OAI: oai:DiVA.org:ltu-17166DiVA, id: diva2:990165
##### Note
Godkänd; 2009; 20090423 (livmar); LICENTIATSEMINARIUM Ämnesområde: Matematik/Mathematics Examinator: Professor Lars-Erik Persson, Luleå tekniska universitet Tid: Tisdag den 2 juni 2009 kl 10.15 Plats: D 2214, Luleå tekniska universitetAvailable from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Marcoci, Liviu-Gabriel
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Cite
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