Hyponormal Toeplitz Operators and Extremal Problems of Hardy Spaces
Open Access
- 1 August 1993
- journal article
- Published by JSTOR in Transactions of the American Mathematical Society
- Vol. 338 (2), 753-767
- https://doi.org/10.2307/2154427
Abstract
The symbols of hyponormal Toeplitz operators are completely described and those are also studied, being related with the extremal problems of Hardy spaces. Moreover, we discuss Halmos's question about a subnormal Toeplitz operator when the self-commutator is finite rank.Keywords
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