Hyponormal block Toeplitz operators and the Caratheodory interpolation problems

被引：0
|
作者：
Hwang, In Sung [1 ]
Kim, Sumin [2 ,3 ]
机构：
[1] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea
[2] Hanyang Univ, Dept Math, Seoul 04763, South Korea
[3] Hanyang Univ, Res Inst Nat Sci, Seoul 04769, South Korea
来源：
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS | 2022年 / 515卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Block Toeplitz operators; Caratheodory interpolation problem; Hyponormal; Cowen set;
D O I：
10.1016/j.jmaa.2022.126418
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
In this paper, we consider hyponormal block Toeplitz operators with trigonometric polynomial symbols via the Caratheodory interpolation problem. We give a method to get inner functions in the Cowen set E(F) when TFis hyponormal. (C) 2022 Elsevier Inc. All rights reserved.
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页数：12
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