Details
The Hardy Space of a Slit Domain
Frontiers in Mathematics
CHF 56.50 |
|
Verlag: | Birkhäuser |
Format: | |
Veröffentl.: | 08.01.2010 |
ISBN/EAN: | 9783034600989 |
Sprache: | englisch |
Anzahl Seiten: | 144 |
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Beschreibungen
If H is a Hilbert space and T : H ? H is a continous linear operator, a natural question to ask is: What are the closed subspaces M of H for which T M ? M? Of course the famous invariant subspace problem asks whether or not T has any non-trivial invariant subspaces. This monograph is part of a long line of study of the invariant subspaces of the operator T = M (multiplication by the independent variable z, i. e. , M f = zf )on a z z Hilbert space of analytic functions on a bounded domain G in C. The characterization of these M -invariant subspaces is particularly interesting since it entails both the properties z of the functions inside the domain G, their zero sets for example, as well as the behavior of the functions near the boundary of G. The operator M is not only interesting in its z own right but often serves as a model operator for certain classes of linear operators. By this we mean that given an operator T on H with certain properties (certain subnormal operators or two-isometric operators with the right spectral properties, etc. ), there is a Hilbert space of analytic functions on a domain G for which T is unitarity equivalent to M .
Preliminaries.- Nearly invariant subspaces.- Nearly invariant and the backward shift.- Nearly invariant and de Branges spaces.- Invariant subspaces of the slit disk.- Cyclic invariant subspaces.- The essential spectrum.- Other applications.- Domains with several slits.- Final thoughts.
Only book which covers Hardy spaces of slit domains Includes supplementary material: sn.pub/extras
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