Shift invariant subspaces of composition operators.
Jones, Matthew (2005) Shift invariant subspaces of composition operators. Archiv der Mathematik, 84 (3). pp. 258-267. ISSN 1420-8938
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Let C denote the composition operator defined on the standard Hardy spaces Hp as where is an analytic self-map of the unit disk in the complex plane. In this paper we discuss those invariant subspaces of C in Hp which are invariant under the shift operator, We restrict our attention to the case where is an inner function. Our main result characterises these invariant subspaces. We also consider C when restricted to such an invariant subspace and we describe the structure of the operator and find a formula for the essential spectral radius.
|Research Areas:||Business School > Economics and International Development|
|Citations on ISI Web of Science:||2|
|Deposited On:||02 Dec 2008 17:31|
|Last Modified:||06 Feb 2013 10:57|
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