Results 241 to 250 of about 524,744 (263)

Replication and validation of two novel magnetoencephalography functional connectivity measures in Alzheimer's disease. [PDF]

Imaging Neurosci (Camb)
Scheijbeler EP, Molleson M, Schoonhoven DN, van Nifterick AM, Hillebrand A, de Haan W, Stam CJ, Gouw AA.   +7 more
europepmc   +1 more source

Bayesian inference of gene regulatory networks at stochastic steady state. [PDF]

J R Soc Interface
Gupta A, Yoon R, Josic K.
europepmc   +1 more source

Theory and simulations of delayed stochastic and deterministic models of prion diseases. [PDF]

J Math Biol
Boregowda G, Sharif O, Gutierrez Iii D, Simmons A, Pujo-Menjouet L, Oraby T, Lindstrom MR.   +6 more
europepmc   +1 more source

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Pentadiagonal Oscillatory Matrices with Two Spectrum in Common

Positivity, 2006
Let \(\sigma,\sigma_1,\sigma_2\) be the spectrum of a given symmetric pentadiagonal oscillatory (SPO) matrix \(A\) and of the matrices obtained by deleting from \(A\) the first or the first two rows and columns, respectively. The author discusses operations in terms of elementary matrices (a) for constructing from \(A\) a family of SPO matrices with ...
Kazem Ghanbari
exaly   +3 more sources

Oscillatory banded Hessenberg matrices, multiple orthogonal polynomials and Markov chains

Physica Scripta, 2023
Abstract A spectral Favard theorem is derived for bounded banded lower Hessenberg matrices that possess a positive bidiagonal factorization. The rich knowledge concerning the spectral and factorization properties of oscillatory matrices forms the basis of this theorem, which is formulated in terms of sequences of multiple orthogonal ...
Amílcar Branquinho, Ana FoulquiéMoreno, Manuel Mañas   +2 more
exaly   +3 more sources

Generalized Oscillatory Matrices

AIP Conference Proceedings, 2007
Gantmacher and Krein from their investigations on oscillations of mechanical systems, defined an important class of matrices, called oscillatory matrices. An n×n totally nonnegative matrix A is called oscillatory if some positive integral power of it is totally positive. Besides this, we note that some of properties of the oscillatory matrix studied by
Juan R Torregrosa
exaly   +2 more sources

Some Applications of the Theory of Oscillatory Matrices

Mechanics: Dynamical Systems, 1986
In this section we consider the problem of constructing a Jacobian matrix which has one or more specified eigenvectors. Following Vijay (1972), Gladwell (1985b), we prove: Theorem 6.1.1. The necessary and sufficient condition for u to be an eigenvector of a positive definite Jacobian matrix with negative off-diagonal elements is that Su + = Su -
G M L Gladwell
exaly   +2 more sources

Difference discrete system of Euler-beam with arbitrary supports and sign-oscillatory property of stiffness matrices

Applied Mathematics and Mechanics (English Edition), 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wang, Qishen, Wang, Dajun
exaly   +2 more sources

Oscillatory Matrices and Kernels as Well as Properties of Eigenpairs

2019
The theory of oscillatory matrices and kernels forms the mathematical foundation for the study of qualitative properties of natural frequencies and mode shapes of bars and beams. This chapter provides an introduction to the theory. The content is drawn largely from the monograph, Oscillation Matrices and Kernels and Small Vibrations of Mechanical ...
Beichang He, Dajun Wang, Qishen Wang
exaly   +2 more sources

Spectra of Lower Triangular Infinite Matrices Formed by Oscillatory Sequences

Complex Analysis and Operator Theory, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sanjay Kumar Mahto, P. D. Srivastava
openaire   +2 more sources