On the extended eigenvalues and extended
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M. GΓΌrdal
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Article
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2009
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Elsevier Science
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English
β 277 KB
In the present paper we consider the shift operator S on the Wiener algebra W (D) of analytic functions on the unit disc D of the complex plane C. A complex number Ξ» is called an extended eigenvalue of S if there exists a nonzero operator A satisfying the equation AS = Ξ»SA. We prove that the set of