Results 1 to 10 of about 134,115 (317)
Threshold Effects for the Generalized Friedrichs Model with the Perturbation of Rank One
Abstract and Applied Analysis, 2012 A family Hμ(p), μ>0, p∈𝕋2 of the Friedrichs models with the perturbation of rank one, associated to a system of two particles, moving on the two-dimensional lattice ℤ2 is considered. The existence or absence of the unique eigenvalue of the operator Hμ(p)
Saidakhmat Lakaev +2 more
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Eigenvalue spectrum of the spheroidal harmonics: A uniform asymptotic analysis
Physics Letters B, 2015 The spheroidal harmonics Slm(θ;c) have attracted the attention of both physicists and mathematicians over the years. These special functions play a central role in the mathematical description of diverse physical phenomena, including black-hole ...
Shahar Hod
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A Simple Matrix Approach to Determination of the Helium Atom Energies
Jurnal Penelitian Fisika dan Aplikasinya, 2019 Calculation of He atomic energy levels using the first order perturbation theory taught in the Basic Quantum Mechanics course has led to relatively large errors.
Redi Kristian Pingak +2 more
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Perturbation determinants in Banach spaces — with an application to eigenvalue estimates for perturbed operators [PDF]
, 2016 Marcel Hansmann
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Computable eigenvalue bounds for rank-k perturbations
Linear Algebra and its Applications, 2010 The authors investigate lower bounds for the eigenvalues of low rank Hermitian perturbations of Hermitian matrices and for the singular values of low rank perturbations of general matrices. They show that, for the smallest eigenvalue, some earlier results of Weyl and of \textit{I. C. F. Ipsen} and \textit{B. Nadler} [SIAM J. Matrix Anal. Appl.
Brandts, J.H., Reis da Silva, R.
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Ain Shams Engineering Journal, 2016 This paper deals with the modelling and small signal stability analysis for the two areas interconnected power system using a load frequency controller. The eigenvalues and the participation factor analysis are used to examine the small signal stability ...
Ravi Shankar +2 more
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Pairs of positive solutions for resonant singular equations with the p-Laplacian
Electronic Journal of Differential Equations, 2017 We consider a nonlinear elliptic equation driven by the Dirichlet p-Laplacian with a singular term and a (p-1)-linear perturbation which is resonant at $+\infty$ with respect to the principal eigenvalue. Using variational tools, together with suitable
Nikolaos S. Papageorgiou +2 more
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Perturbation bounds for eigenvalues of diagonalizable matrices and singular values
Journal of Inequalities and Applications, 2016 Perturbation bounds for eigenvalues of diagonalizable matrices are derived. Perturbation bounds for singular values of arbitrary matrices are also given. We generalize some existing results.
Duanmei Zhou +3 more
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A note on switching eigenvalues under small perturbations [PDF]
, 2023 Marina Masioti +3 more
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Thermoelastic Cylinder Subjected to Suddenly Applied Radial Symmetric Pressure
Engineering Transactions, 1986 Stresses, temperature and oscillations of a thermoelastic cylinder suddenly cxposed to the radial symmetric pressure are analyzed in the paper. Solution of the corresponding eigenvalue problem is obtained by means of the perturbation technique, so that
M.M. Marjanov
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