Results 21 to 30 of about 3,218 (198)

Asymptotic behaviour and approximation of eigenvalues for unbounded block Jacobi matrices [PDF]

open access: yesOpuscula Mathematica, 2010
The research included in the paper concerns a class of symmetric block Jacobi matrices. The problem of the approximation of eigenvalues for a class of a self-adjoint unbounded operators is considered.
Maria Malejki
doaj   +1 more source

Spectral Bounds for Polydiagonal Jacobi Matrix Operators [PDF]

open access: yesInternational Journal of Partial Differential Equations, 2014
The research on spectral inequalities for discrete Schrödinger operators has proved fruitful in the last decade. Indeed, several authors analysed the operator’s canonical relation to a tridiagonal Jacobi matrix operator. In this paper, we consider a generalisation of this relation with regard to connecting higher order Schrödinger-type operators with ...
openaire   +3 more sources

Closed-Form Expressions of Ergodic Capacity and MMSE Achievable Sum Rate for MIMO Jacobi and Rayleigh Fading Channels

open access: yesIEEE Access, 2020
Multimode/multicore fibers are expected to provide an attractive solution to overcome the capacity limit of the current optical communication system. In the presence of strong crosstalk between modes and/or cores, the squared singular values of the input/
Amor Nafkha, Nizar Demni
doaj   +1 more source

Research on incremental nonlinear dynamic inverse control method for turboshaft engine based on Jacobi matrix

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In order to enhance the anti-interference ability of the speed to external load and achieve the rapid response control for turboshaft engine of next-generation helicopters, an incremental nonlinear dynamic inverse (INDI) control method for turboshaft ...
Jie Song   +3 more
doaj   +1 more source

Analytical properties of the two-variables Jacobi matrix polynomials with applications

open access: yesDemonstratio Mathematica, 2021
In the current study, we introduce the two-variable analogue of Jacobi matrix polynomials. Some properties of these polynomials such as generating matrix functions, a Rodrigue-type formula and recurrence relations are also derived.
Abdalla Mohamed, Hidan Muajebah
doaj   +1 more source

A Formula for Eigenvalues of Jacobi Matrices with a Reflection Symmetry

open access: yesAdvances in Mathematical Physics, 2018
The spectral properties of two special classes of Jacobi operators are studied. For the first class represented by the 2M-dimensional real Jacobi matrices whose entries are symmetric with respect to the secondary diagonal, a new polynomial identity ...
S. B. Rutkevich
doaj   +1 more source

Some new results for Jacobi matrix polynomials

open access: yesFilomat, 2013
The main aim of this paper is to obtain some recurrence relations and generating matrix function for Jacobi matrix polynomials (JMP). Also, various integral representations satisfied by JMP are derived.
AKTAŞ, RABİA   +2 more
openaire   +3 more sources

A Comparison of Sequential and GPU Implementations of Iterative Methods to Compute Reachability Probabilities [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2012
We consider the problem of computing reachability probabilities: given a Markov chain, an initial state of the Markov chain, and a set of goal states of the Markov chain, what is the probability of reaching any of the goal states from the initial state ...
Elise Cormie-Bowins
doaj   +1 more source

Biorthogonal matrix polynomials related to Jacobi matrix polynomials

open access: yesComputers & Mathematics with Applications, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Varma, Serhan, Taşdelen, Fatma
openaire   +2 more sources

Darboux transformation of symmetric Jacobi matrices and Toda lattices

open access: yesFrontiers in Applied Mathematics and Statistics
Let J be a symmetric Jacobi matrix associated with some Toda lattice. We find conditions for Jacobi matrix J to admit factorization J = LU (or J = 𝔘𝔏) with L (or 𝔏) and U (or 𝔘) being lower and upper triangular two-diagonal matrices, respectively.
Ivan Kovalyov, Oleksandra Levina
doaj   +1 more source

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