Documents  Ransford, Thomas | enregistrements trouvés : 4

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Let $X$ be a Banach space of holomorphic functions on the unit disk. A linear polynomial approximation scheme for $X$ is a sequence of bounded linear operators $T_{n} :X\rightarrow X$ with the property that, for each $f\in X$, the functions $T_{n}\left ( f \right )$ are polynomials converging to $f$ in the norm of the space. We completely characterize those spaces $X$ that admit a linear polynomial approximation scheme. In particular, we show that it is not sufficient merely that polynomials be dense in $X$. (Joint work with Javad Mashreghi). Let $X$ be a Banach space of holomorphic functions on the unit disk. A linear polynomial approximation scheme for $X$ is a sequence of bounded linear operators $T_{n} :X\rightarrow X$ with the property that, for each $f\in X$, the functions $T_{n}\left ( f \right )$ are polynomials converging to $f$ in the norm of the space. We completely characterize those spaces $X$ that admit a linear polynomial approximation scheme. In particular, we show ...

41A10 ; 46B15 ; 46B28

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- 232 p.
ISBN 978-0-521-46120-7

London mathematical society student texts , 0028

Localisation : Collection 1er étage

théorie du potentiel # fonction harmonique # fonction subharmonique # capacité # principe de maximum # fonction analytique # problème de Dirichlet # ensemble polaire # laplacien généralisé # polynôme homogène # approximation uniforme # algèbre de Banach # dynaique complexe

31-02 ; 31A05 ; 31B15 ; 30C85

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- xiii; 211 p.
ISBN 978-1-107-04752-5

Cambridge tracts in mathematics , 0203

Localisation : Collection 1er étage;Réserve

problème de Dirichlet # fonction holomorphe # fonction de plusieurs variables complexes

30-02 ; 30C85

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