Hyponormal operators with rank one self-commutator and quadrature domains (Q1423744)
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scientific article; zbMATH DE number 2051562
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Hyponormal operators with rank one self-commutator and quadrature domains |
scientific article; zbMATH DE number 2051562 |
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Hyponormal operators with rank one self-commutator and quadrature domains (English)
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7 March 2004
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Let \(H\) be a Hilbert space and let \(L(H)\) be the algebra of all bounded linear operators on \(H\). An operator \(T\in L(H)\) is called hyponormal if \([T^*,T]= T^*T- TT^*\geq 0\). Let \(M_T- \overline{[T^*,T]H}\) and let \(K_T= \overline{\bigvee_m T^{*m}M_T}\). The present paper is a continuation of [\textit{D. Xia}, J. Math. Anal. Appl. 203, No. 2, 540--559 (1996; Zbl 0902.47025)]. In the paper under review, the author studies the Hardy space type functional model of pure hyponormal operators with rank one self-commutators under the conditions \(\dim M_T= I\) and \(\dim K_T< \infty\).
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hyponormal operator
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rank one self-commutator
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quadrature domain
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