Results 91 to 100 of about 23,326 (218)

Singular matrices possessing the triangle property

open access: yesSpecial Matrices
It is known that the inverse of an invertible real square matrix satisfying the triangle property is a tridiagonal matrix. In this note, results that may be considered as analogues of this assertion are obtained for the Moore-Penrose inverse and the ...
Priya K. Kranthi, Sivakumar K. C.
doaj   +1 more source

Matrix measures and random walks [PDF]

open access: yes
In this paper we study the connection between matrix measures and random walks with a tridiagonal block transition matrix. We derive sufficient conditions such that the blocks of the n-step transition matrix of the Markov chain can be represented as ...
Dette, Holger   +3 more
core  

On the spectrum of tridiagonal matrices with two-periodic main diagonal

open access: yesSpecial Matrices
We find the spectrum and eigenvectors of an arbitrary irreducible complex tridiagonal matrix with two-periodic main diagonal. This is expressed in terms of the spectrum and eigenvectors of the matrix with the same sub- and superdiagonals and zero main ...
Dyachenko Alexander, Tyaglov Mikhail
doaj   +1 more source

The pseudosymmetric tridiagonalization of an arbitrary real matrix

open access: yesLinear Algebra and its Applications, 1990
AbstractThis paper presents an algorithm for similarly reducing an arbitrary real matrix to a pseudosymmetric tridiagonal one, discusses the possibility of overcoming breakdowns in the tridiagonalization process, and gives some methods. It also discusses the perturbation bounds of eigenvalues of a pseudosymmetric tridiagonal matrix.
openaire   +2 more sources

Inequalities on the Elements of the Inverse of a Certain Tridiagonal Matrix [PDF]

open access: yesMathematics of Computation, 1970
Inequalities are obtained for the elements in the inverse of a tridiagonal matrix with positive off-diagonal elements.
openaire   +2 more sources

On the Bicomplex $k$-Fibonacci Quaternions

open access: yesCommunications in Advanced Mathematical Sciences, 2019
In this paper, bicomplex $k$-Fibonacci quaternions are defined. Also, some algebraic properties of bicomplex $k$-Fibonacci quaternions are investigated.
Fügen Torunbalcı Aydın
doaj   +1 more source

Tridiagonal Symmetries of Models of Nonequilibrium Physics

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2008
We study the boundary symmetries of models of nonequilibrium physics where the steady state behaviour strongly depends on the boundary rates. Within the matrix product state approach to many-body systems the physics is described in terms of matrices ...
Boyka Aneva
doaj   +1 more source

Complex Factorizations of the Lucas Sequences via Matrix Methods

open access: yesJournal of Applied Mathematics, 2014
Firstly, we show a connection between the first Lucas sequence and the determinants of some tridiagonal matrices. Secondly, we derive the complex factorizations of the first Lucas sequence by computing those determinants with the help of Chebyshev ...
Honglin Wu
doaj   +1 more source

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