bokomslag The Hardy Space of a Slit Domain
Vetenskap & teknik

The Hardy Space of a Slit Domain

Alexandru Aleman Nathan S Feldman William T Ross

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  • 124 sidor
  • 2009
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 .
  • Författare: Alexandru Aleman, Nathan S Feldman, William T Ross
  • Format: Pocket/Paperback
  • ISBN: 9783034600972
  • Språk: Engelska
  • Antal sidor: 124
  • Utgivningsdatum: 2009-08-14
  • Förlag: Birkhauser Verlag AG