Circular Symmetry of Spectra of Composition Operators

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For a certain class of composition operators Cφ on the Hardy space H2(D) with multivalent symbol φ, we verify the conjecture due to Cowen and MacCluer [3], which explains the presence of circular symmetry of the spectrum in this case.

Original languageEnglish
Pages (from-to)281-293
JournalFar East Journal of Mathematical Sciences
Issue number35
StatePublished - 2009


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