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math.FA2012
Hyponormality and Subnormality of Block Toeplitz Operators
Raul Curto, In Sung Hwang, Woo Young Lee
In this paper we are concerned with hyponormality and subnormality of block Toeplitz operators acting on the vector-valued Hardy space of the unit circle. Firs…
math.FA2012★ 1 cited
Which subnormal Toeplitz operators are either normal or analytic?
Raul Curto, In Sung Hwang, Woo Young Lee
We study subnormal Toeplitz operators on the vector-valued Hardy space of the unit circle, along with an appropriate reformulation of P.R. Halmos's Problem 5: Which subnormal block…