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  4. Inverses, determinants, eigenvalues, and eigenvectors of real symmetric Toeplitz matrices with linearly increasing entries
 
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Inverses, determinants, eigenvalues, and eigenvectors of real symmetric Toeplitz matrices with linearly increasing entries

Publikationstyp
Journal Article
Date Issued
2014-08-07
Sprache
English
Author(s)
Bünger, Florian  
Institut
Zuverlässiges Rechnen E-19  
TORE-URI
http://hdl.handle.net/11420/7882
Journal
Linear algebra and its applications  
Volume
459
Start Page
595
End Page
619
Citation
Linear Algebra and Its Applications (459): 595-619 (2014-10-15)
Publisher DOI
10.1016/j.laa.2014.07.023
Scopus ID
2-s2.0-84907337924
Publisher
American Elsevier Publ.
We explicitly determine the skew-symmetric eigenvectors and corresponding eigenvalues of the real symmetric Toeplitz matricesT=T(a,b,n):=( a+b|j-k|)1≤j,k≤n of order n≥3 where a, b ∈ ℝ, b ≠0. The matrix T is singular if and only if c := a/b = -n-1/2. In this case we also explicitly determine the symmetric eigenvectors and corresponding eigenvalues of T. If T is regular, we explicitly compute the inverse T- 1, the determinant det T, and the symmetric eigenvectors and corresponding eigenvalues of T are described in terms of the roots of the real self-inversive polynomial pn(δ;z):=(zn+1- δzn-δz+1)/(z+1) if n is even, and pn(δ; z):=zn+1-δzn-δz+1 if n is odd, δ:=1+2/(2c+n-1).
Subjects
Determinant
Eigenvalue
Eigenvector
Inverse
Toeplitz matrix
DDC Class
004: Informatik
510: Mathematik
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