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    Berezin symbols and operator theory

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    Date
    2000-05-01
    Author
    Potter, Michael James A.
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    Abstract
    Let 'H' be a standard analytic functional Hilbert space over a bounded domain [Omega] ? C. We examine the Berezin symbols 'A~' of bounded operators A?BH and characterize the compact operators KH by Berezin symbol behavior. We show that A?KH iff the Berezin symbol of every unitary conjugate of 'A' is in 'C'0([Omega]) (Nordgren and Rosenthal, 1994). Special attention is also given to examples and the theory of Berezin symbols on the Bergman and Hardy space. We show a characterization (Axler and Zheng, 1998) of compact Toeplitz operators on the Bergman space that generalizes to Hankel operators. The condition 'A' is compact iff A*A&d15;z [right arrow]0 as @'z'@ [right arrow] 1- holds for all Toeplitz, Hankel, and composition operators on both the Bergman and Hardy spaces.
    URI
    http://hdl.handle.net/1993/2395
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    • FGS - Electronic Theses and Practica [25494]

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