Results 111 to 120 of about 276,787 (219)

Upper bounds for eigenvalues of a nonlinear eigenvalue problem

Journal of Mathematical Analysis and Applications, 1978
with compact, positive definite operators A, B in a complex separable Hilbert space. Turner [ll, 121 has studied this problem (see also Weinberger [13], Eisenfeld [4], W erner [14], Langer [S]). He describes the spectrum and obtains variational principles for the eigenvalues; furthermore he gives some estimates and bounds for the eigenvalues.
openaire   +2 more sources

On the empirical distribution of eigenvalues of a class of large dimensional random matrices

, 1995
A stronger result on the limiting distribution of the eigenvalues of random Hermitian matrices of the form A + XTX*, originally studied in Marcenko and Pastur, is presented. Here, X(N - n), T(n - n), and A(N - N) are independent, with X containing i.i.d.
J. W. Silverstein, Z. Bai
semanticscholar   +1 more source

Note on eigenvectors from eigenvalues [PDF]

arXiv, 2019
Denton, Parke, Tao and Zhang gave a new method which determines eigenvectors from eigenvalues for Hermitian matrices with distinct eigenvalues. In this short note, we extend the above result to general Hermitian matrices.
arxiv  

Issues of linearization of a twoaphase boost dcadc converter applied in the power supply systems operating on renewable energy sources

Известия Томского политехнического университета: Инжиниринг георесурсов, 2017
Renewable energy resources, for example, photovoltaic elements and wind turbines draw the increasing attention due to energy shortage and depletion of energy sources. Such energy sources usually give low voltage output.
Robert Dixon, Gennady Yakovlevich Mikhalchenko, Sergey Gennadievich Mikhalchenko, Viktor Aleksandrovich Russkin, Sergey Mikhailovich Semenov   +4 more
doaj  

Remarks on the second Neumann eigenvalue

Electronic Journal of Differential Equations, 2022
Jose C. Sabina de Lis
doaj  

On an eigenvalue problem associated with the (p, q) − Laplacian

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica
Let Ω ⊂ ℝN, N ≥ 2, be a bounded domain with smooth boundary ∂Ω. Consider the following generalized Robin-Steklov eigenvalue problem associated with the operator 𝒜u = − Δpu − Δqu {𝒜u+ρ1(x)|u|p-2u+ρ2(x)|u|q-2u=λα(x)|u|r-2u,   x∈Ω,∂u∂vA+γ1(x)|u|p-2u+γ2(x)|u|
Barbu Luminiţa, Burlacu Andreea, Moroşanu Gheorghe   +2 more
doaj   +1 more source

On the second eigenvalue of nonlinear eigenvalue problems

Electronic Journal of Differential Equations, 2018
This article is devoted to the characterization of the second eigenvalue of nonlinear eigenvalue problems. We propose an abstract approach which allows to treat nonsmooth quasilinear problems and also to recover, in a unified way, previous results concerning the p-Laplacian.
DEGIOVANNI M., MARZOCCHI M.
openaire   +2 more sources

Eigenvalues of a real supersymmetric tensor

Journal of symbolic computation, 2005
L. Qi
semanticscholar   +1 more source

Spectral Properties of the Laplace Operator with Variable Dependent Boundary Conditions in a Disk

Axioms
In this work, we study the spectral properties of the Laplace operator with variable dependent boundary conditions in a disk. The boundary conditions include periodic and antiperiodic boundary conditions as well as the generalized Samarskii–Ionkin-type ...
Aishabibi Dukenbayeva, Makhmud Sadybekov
doaj   +1 more source

Curl curl versus Dirichlet Laplacian eigenvalues [PDF]

arXiv
We provide an upper estimate for the eigenvalues of a curl curl operator on a bounded, three-dimensional Euclidean domain in terms of eigenvalues of the Dirichlet Laplacian. The result complements recent inequalities between curl curl and Neumann Laplacian eigenvalues.
arxiv