Title
A Systematic Analysis on Analyticity of Semisimple Eigenvalues of Matrix-Valued Functions.
Abstract
In this paper we study the existence of analytic eigenvalue functions of an analytic matrix-valued function L(lambda,rho). Instead of proposing sufficient conditions for each individual case as in the literature, we propose a systematic scheme to discuss the existence of analytic eigenvalue functions of L(lambda,rho) when lambda(0) is a semisimple eigenvalue of L(lambda, 0). We show that lambda(rho) = lambda(0)+rho mu(rho) is an eigenvalue of L(lambda,rho) if and only if mu(rho) is an eigenvalue of another analytic matrix-valued function P(mu,rho) which is constructed based on the first order (partial) derivatives of L(lambda,rho) at (lambda(0), 0). Based on this result, a systematic scheme is proposed to check whether there exist analytic eigenvalue functions of L(lambda,rho). This systematic scheme covers existing sufficient conditions in the literature, and can lead to much more general conditions.
Year
DOI
Venue
2016
10.1137/15M1053050
SIAM JOURNAL ON MATRIX ANALYSIS AND APPLICATIONS
Keywords
Field
DocType
analytic eigenvalue function,semisimple eigenvalue,matrix-valued function
Combinatorics,Mathematical analysis,Matrix (mathematics),First order,Pure mathematics,Eigenvalues and eigenvectors,Mathematics,Lambda
Journal
Volume
Issue
ISSN
37
4
0895-4798
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Jiang Qian172.66
Delin Chu2242.72
Roger C. E. Tan310219.13