On Kippenhahn curves and higher-rank numerical ranges of some matrices

被引：7
|
作者：
Bebiano, Natalia [1 ]
da Providencia, Joao [2 ]
Spitkovsky, Ilya M. [3 ]
机构：
[1] Univ Coimbra, Dept Matemdt, Coimbra, Portugal
[2] Univ Coimbra, Dept Fis, Coimbra, Portugal
[3] New York Univ Abu Dhabi NYUAD, Div Sci & Math, POB 129188, Abu Dhabi, U Arab Emirates
来源：
LINEAR ALGEBRA AND ITS APPLICATIONS | 2021年 / 629卷
关键词：
Numerical range; Reciprocal matrices; Kippenhahn curve;
D O I：
10.1016/j.laa.2021.08.010
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The higher rank numerical ranges of generic matrices are described in terms of the components of their Kippenhahn curves. Cases of tridiagonal (in particular, reciprocal) 2-periodic matrices are treated in more detail. (C) 2021 Elsevier Inc. All rights reserved.
引用
收藏
页码：246 / 257
页数：12
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