Results 21 to 30 of about 157,300 (313)
Моделирование 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
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Inverse Nodal Problem for Polynomial Pencil of a Sturm-Liouville Operator from Nodal Parameters [PDF]
Mathematics 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
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Biometrika, 2020 Summary The properties of penalized sample covariance matrices depend on the choice of the penalty function. In this paper, we introduce a class of nonsmooth penalty functions for the sample covariance matrix and demonstrate how their use results in a grouping of the estimated eigenvalues.
Tyler, David E., Yi, Mengxi
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Моделирование 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
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Complex Eigenvalue Analysis of Multibody Problems via Sparsity-Preserving Krylov–Schur Iterations
Machines, 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
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Stability and Phase Portraits for Simple Dynamical Systems
Civil 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
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A problem concerning graphs with just three distinct eigenvalues [PDF]
, 2020 We investigate the problem of finding all the biregrular graphs with just three adjacency eigenvalues, one of which is an eigenvalue ≠ -1, 0 of maximal possible ...
Rowlinson, Peter
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Mathematics, 2022 In this paper, we first derive a family of iterative schemes with fourth order. A weight function is used to maintain its optimality. Then, we transform it into methods with several self-accelerating parameters to reach the highest possible convergence ...
Malik Zaka Ullah +3 more
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Asymptotic approximation of eigenvalues of vector equations [PDF]
, 2005 A vectorial extension of the Keller-Rubinow method of computing asymptotic approximations of eigenvalues in bounded domains is presented. The method is applied to the problem of a multimode step-profile cylindrical optical fibre, including the effects ...
Chapman, Stephen +4 more
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ISI spectral radii and ISI energies of graph operations
Frontiers in Physics, 2023 Graph energy is defined to be the p-norm of adjacency matrix associated to the graph for p = 1 elaborated as the sum of the absolute eigenvalues of adjacency matrix.
Ahmad Bilal +3 more
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