Results 161 to 170 of about 442,498 (206)

A Review on the Inverse of Symmetric Tridiagonal and Block Tridiagonal Matrices

SIAM Journal on Matrix Analysis and Applications, 1992
In this paper some results are reviewed concerning the characterization of inverses of symmetric tridiagonal and block tridiagonal matrices as well as results concerning the decay of the elements of the inverses. These results are obtained by relating the elements of inverses to elements of the Cholesky decompositions of these matrices.
Gerard Meurant
exaly   +3 more sources

Parallel Factorizations for Tridiagonal Matrices

open access: yesSIAM Journal on Numerical Analysis, 1993
The authors analyze the problem of solving tridiagonal linear systems on parallel computers. A wide class of efficient parallel solvers is derived by considering different parallel factorizations of partitioned matrices. These solvers have a minimum requirement of data transmission.
P. AMODIO, BRUGNANO, LUIGI, T. POLITI
openaire   +4 more sources

Tridiagonal M-matrices whose inverse is tridiagonal and related pentadiagonal matrices

open access: yesRevista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Barreras, A., Peña, J. M.
openaire   +3 more sources

Positivity of Block Tridiagonal Matrices

open access: yesSIAM Journal on Matrix Analysis and Applications, 1998
This paper relates disconjugacy of linear Hamiltonian difference systems (LHdS) (and hence positive definiteness of certain discrete quadratic functionals) to positive definiteness of some block tridiagonal matrices associated with these systems and functionals.
Martin Bohner, Ondrej Doslý
openaire   +4 more sources

Shifted Fourier Matrices and Their Tridiagonal Commutors

SIAM Journal on Matrix Analysis and Applications, 2003
It is known that, for $ n \ge 3 $, the n × n Fourier matrix $ {F} = n^{-1/2} [e^{2 \pi {{\text{\textit{\r{\i}}}}} \mu \nu/n}] $ ($ 0 \le \mu < n $, $ 0 \le \nu < n $) commutes with a nonscalar tridiagonal matrix T and also with another matrix X that is "almost" tridiagonal.
Dale Mugler
exaly   +3 more sources

Home - About - Disclaimer - Privacy