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Homogeneous multiplication operators on bounded symmetric domains
Authors:Jonathan Arazy  Genkai Zhang
Institution:a Department of Mathematics, University of Haifa, Haifa 31905, Israel
b Department of Mathematics, Chalmers University of Technology and Göteborg University, S-412 96 Göteborg, Sweden
Abstract:Let D=G/K be an irreducible bounded symmetric domain of dimension d and let View the MathML source be the analytic continuation of the weighted Bergman spaces of holomorphic functions on D. We consider the d-tuple M=(M1,…,Md) of multiplication operators by coordinate functions and consider its spectral properties. We find those parameters ν for which the tuple M is subnormal and we answer some open questions of Bagchi and Misra. In particular, we prove that when D=Bd is the unit ball in View the MathML source, then Bd is a k-spectral set of M if and only if View the MathML source is the Hardy space or a weighted Bergman space.
Keywords:
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