On the numerical ranges of some tridiagonal matrices

被引：0

作者：

Chien, Ruey Ting ^{[1
]}

Spitkovsky, Ilya M. ^{[1
,2
]}

机构：

[1] New York Univ Abu Dhabi, Div Sci & Math, Abu Dhabi, U Arab Emirates

[2] Coll William & Mary, Dept Math, Williamsburg, VA 23187 USA

来源：

LINEAR ALGEBRA AND ITS APPLICATIONS | 2015年 / 470卷

关键词：

Numerical range; Tridiagonal matrices; FLAT PORTIONS; BOUNDARY;

D O I：

10.1016/j.laa.2014.08.010

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

For certain tridiagonal matrices of small size, we give a complete description of flat portions on the boundary of their numerical range. We also discuss the conditions for these numerical ranges to be elliptical. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：228 / 240

页数：13

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