Results 21 to 30 of about 675,086 (262)

Novel concepts in linear Diophantine fuzzy graphs with an application [PDF]

open access: yesProceedings of the Estonian Academy of Sciences
The linear Diophantine fuzzy graph (LDFG) notion serves as a new mathematical approach for the ambiguity and uncertainty modeling in decision-making issues. An LDFG eliminates the strict limitations of various existing graphs. The energy concept in graph
Xiaolong Shi   +3 more
doaj   +1 more source

Universal Behavior of Correlations between Eigenvalues of Random Matrices [PDF]

open access: yes, 1994
The universal connected correlations proposed recently between eigenvalues of unitary random matrices is examined numerically. We perform an ensemble average by the Monte Carlo sampling.
A. Zee   +9 more
core   +3 more sources

Asymptotic Expansions of Eigenvalues of Periodic and Antiperiodic Boundary Problems for Singularly Perturbed Second Order Differential Equation with Turning Points

open access: yesМоделирование и анализ информационных систем, 2016
For a second order equation with a small factor at the highest derivative the asymptotic behavior of all eigenvalues of periodic and antiperiodic problems is studied. The main assumption is that the coefficient at the first derivative in the equation is the
S. A. Kashchenko
doaj   +1 more source

Inverse Nodal Problem for Polynomial Pencil of a Sturm-Liouville Operator from Nodal Parameters [PDF]

open access: yesMathematics Interdisciplinary Research, 2021
A Sturm-Liouville problem with n-potential functions in the second order differential equation and which contains spectral parameter depending on linearly in one boundary condition is considered.
Sertac Goktas, Esengul Biten
doaj   +1 more source

Central limit theorems for eigenvalues in a spiked population model [PDF]

open access: yes, 2008
In a spiked population model, the population covariance matrix has all its eigenvalues equal to units except for a few fixed eigenvalues (spikes). This model is proposed by Johnstone to cope with empirical findings on various data sets.
Bai, Zhidong, Yao, Jian-feng
core   +3 more sources

Asymptotic of Eigenvalues of Periodic and Antiperiodic Boundary Value Problem for Second Order Differential Equations

open access: yesМоделирование и анализ информационных систем, 2017
The article considers asymptotic distribution of characteristic constants in periodic and antiperiodic boundary-value problems for the second-order linear equation with periodic coefficients.
Sergey A. Kashchenko
doaj   +1 more source

Complex Eigenvalue Analysis of Multibody Problems via Sparsity-Preserving Krylov–Schur Iterations

open access: yesMachines, 2023
In this work, we discuss the numerical challenges involved in the computation of the complex eigenvalues of damped multi-flexible-body problems. Aiming at the highest generality, the candidate method must be able to deal with arbitrary rigid body modes ...
Dario Mangoni   +2 more
doaj   +1 more source

Eigenvaluations

open access: yesAnnales Scientifiques de l’École Normale Supérieure, 2007
48 pages, 2 figures, To appear in Annales de l ...
Favre, Charles, Jonsson, Mattias
openaire   +3 more sources

Eigenvalue Ratio Detection Based on Exact Moments of Smallest and Largest Eigenvalues [PDF]

open access: yes, 2011
Detection based on eigenvalues of received signal covariance matrix is currently one of the most effective solution for spectrum sensing problem in cognitive radios.
Alouini, Mohamed-Slim   +4 more
core   +1 more source

Stability and Phase Portraits for Simple Dynamical Systems

open access: yesCivil and Environmental Engineering, 2018
In structural dynamics models of mechanical oscillator and vibration analysis are of great importance. In this article motion of mechanical oscillator is modelled using second order linear autonomous differential systems.
Kúdelčíková Mária, Merčiaková Eva
doaj   +1 more source

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