Results 11 to 20 of about 23,326 (218)

An Algorithm to Construct a Tridiagonal Matrix Factored by Bidiagonal Matrices with Prescribed Eigenvalues and Specified Entries

open access: goldJournal of Mathematical and Fundamental Sciences
This paper presents an algorithm to construct a tridiagonal matrix factored by bidiagonal matrices with prescribed eigenvalues and specified matrix entries.
Koichi Kondo
doaj   +2 more sources

Tridiagonal matrix representations of cyclic self-adjoint operators. II [PDF]

open access: bronzePacific Journal of Mathematics, 1985
A bounded cyclic self-adjoint operator C defined on a separable Hilbert space H can be represented as a tridiagonal matrix with respect to the basis generated by the cyclic vector. An operator J can then be defined so that CJ − JC = −2iK where K also has tridiagonal form.
J. Dombrowski
openalex   +8 more sources

Explicit inverse of a tridiagonal k−Toeplitz matrix [PDF]

open access: greenNumerische Mathematik, 2005
We obtain explicit formulas for the entries of the inverse of a nonsingular and irreducible tridiagonal k−Toeplitz matrix A. The proof is based on results from the theory of orthogonal polynomials and it is shown that the entries of the inverse of such a matrix are given in terms of Chebyshev polynomials of the second kind.
Carlos M. da Fonseca, J. Petronilho
openalex   +5 more sources

Algorithm 122: Tridiagonal matrix [PDF]

open access: bronzeCommunications of the ACM, 1962
Gerard F. Dietzel
openalex   +3 more sources

Sufficient Conditions for Existence of the LU Factorization of Toeplitz Symmetric Tridiagonal Matrices

open access: yesTrends in Computational and Applied Mathematics, 2023
The characterization of inverses of symmetric tridiagonal and block tridiagonal matrices and the development of algorithms for finding the inverse of any general non-singular tridiagonal matrix are subjects that have been studied by many authors.
C. G. Almeida, S. A. E. Remigio
doaj   +1 more source

Ultralow-Dimensionality Reduction for Identifying Critical Transitions by Spatial-Temporal PCA. [PDF]

open access: yesAdv Sci (Weinh)
The proposed spatial‐temporal principal component analysis (stPCA) method analytically reduces high‐dimensional time‐series data to a single latent variable by transforming spatial information into temporal dynamics. By preserving the temporal properties of the original data, stPCA effectively identifies critical transitions and tipping points.
Chen P   +6 more
europepmc   +2 more sources

Symbolic Algorithm for Inverting General k-Tridiagonal Interval Matrices

open access: yesInternational Journal of Analysis and Applications, 2023
The k-tridiagonal matrices have received much attention in recent years. Many different algorithms have been proposed to improve the efficiency of k-tridiagonal matrix estimation.
Sivakumar Thirupathi   +1 more
doaj   +1 more source

On the Generalized Gaussian Fibonacci Numbers and Horadam Hybrid Numbers: A Unified Approach

open access: yesAxioms, 2022
In this paper, we consider an approach based on the elementary matrix theory. In other words, we take into account the generalized Gaussian Fibonacci numbers. In this context, we consider a general tridiagonal matrix family.
Fatih Yılmaz, Mustafa Özkan
doaj   +1 more source

Analytic determinants and inverses of Toeplitz and Hankel tridiagonal matrices with perturbed columns

open access: yesSpecial Matrices, 2020
In this paper, our main attention is paid to calculate the determinants and inverses of two types Toeplitz and Hankel tridiagonal matrices with perturbed columns.
Fu Yaru   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy