On the 2-norm distance from a normal matrix to the set of matrices with a multiple zero eigenvalue

被引：0
|
作者：
Ikramov Kh.D. [1 ]
Nazari A.M. [1 ]
机构：
[1] Moscow State University, Moscow
来源：
Journal of Mathematical Sciences | 2006年 / 137卷 / 3期
关键词：
Stationary Point; Simple Root; Normal Matrix; Hermitian Matrix; Elementary Proof;
D O I：
10.1007/s10958-006-0277-5
中图分类号：
学科分类号：
摘要：
An elementary proof of a formula for the 2-norm distance from a normal matrix A to the set of matrices with a multiple zero eigenvalue is given. Earlier, the authors obtained this formula as an implication of a nontrivial result due to A. N. Malyshev. Bibliography: 4 titles. © 2006 Springer Science+Business Media, Inc.
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页码：4789 / 4793
页数：4
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