Hyponormal trigonometric Toeplitz operators
نویسندگان
چکیده
منابع مشابه
Hyponormality of Trigonometric Toeplitz Operators
In this paper we establish a tractable and explicit criterion for the hyponormality of arbitrary trigonometric Toeplitz operators, i.e., Toeplitz operators Tφ with trigonometric polynomial symbols φ. Our criterion involves the zeros of an analytic polynomial f induced by the Fourier coefficients of φ. Moreover the rank of the selfcommutator of Tφ is computed from the number of zeros of f in the...
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ژورنال
عنوان ژورنال: Operators and Matrices
سال: 2013
ISSN: 1846-3886
DOI: 10.7153/oam-07-31