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http://dx.doi.org/10.5831/HMJ.2018.40.1.155

HYPONORMAL TOEPLITZ OPERATORS ON THE HARDY SPACE OF THE UNIT CIRCLE  

Kwon, Eun Young (Department of Mathematics, Changwon National University)
Kim, An Hyun (Department of Mathematics, Changwon National University)
Publication Information
Honam Mathematical Journal / v.40, no.1, 2018 , pp. 155-162 More about this Journal
Abstract
In this paper, we are concerned with hyponormal Toeplitz operators on the Hardy space of the unit circle. Our main result of this paper is to provide a simple and transparent proof on the hyponormality of Toeplitz operators with symmetric-type symbols via Schur complement lemma.
Keywords
Toeplitz operators; hyponormal; polynomial symbols; Schur complement lemma;
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