Results 61 to 70 of about 430 (144)

Sharp inequalities and asymptotics for polyharmonic eigenvalues

open access: yes
We study eigenvalues of general scalar Dirichlet polyharmonic problems in domains in. We first prove a number of inequalities satisfied by the eigenvalues on general domains, depending on the relations between the orders of the operators involved.
Freitas, Pedro, Buoso, Davide
core   +1 more source

Singular perturbations of curved boundaries in dimension three. The spectrum of the Neumann Laplacian

open access: yes, 2010
We calculate the main asymptotic terms for eigenvalues, both simple and multiple, and eigenfunctions of the Neumann Laplacian in a three-dimensional domain $\Om(h)$ perturbed by a small (with diameter $O(h)$) Lipschitz cavern $\overline{\om_h}$ in a ...
Sokolowski, Jan   +2 more
core   +2 more sources

On the solvability of the Sturm – Liouville problem, nonlinear in the spectral parameter

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки
Background. The paper studies the solvability of the Sturm-Liouville problem, which is nonlinear in the spectral parameter. The problem is studied on a segment with boundary conditions of the third kind. Materials and methods.
G.V. Chalyshov
doaj   +1 more source

Hadamard type asymptotics for eigenvalues of the Neumann problem for elliptic operators

open access: yes, 2016
This paper considers how the eigenvalues of the Neumann problem for an elliptic operator depend on the domain. The proximity of two domains is measured in terms of the norm of the difference between the two resolvents corresponding to the reference ...
Thim, Johan,, Kozlov, Vladimir,
core   +1 more source

On asymptotics of Robin eigenvalues in the Dirichlet limit [PDF]

open access: yes
We investigate the asymptotic behavior of the eigenvalues of the Laplacian with homogeneous Robin boundary conditions, when the (positive) Robin parameter is diverging.
Ognibene, Roberto
core   +1 more source

Pathological exponential asymptotics for a model problem of an equatorially trapped Rossby wave

open access: yes, 2023
We examine a misleadingly simple linear second-order eigenvalue problem (the Hermite-with-pole equation) that was previously proposed as a model problem of an equatorially-trapped Rossby wave.
Trinh, Philippe H.   +2 more
core  

Mixing Rates of the Geometrical Neutral Lorenz Model. [PDF]

open access: yesJ Stat Phys, 2023
Bruin H, Canales Farías HH.
europepmc   +1 more source

On eigenvalues and eigenfunctions of the operators defining multidimensional scaling on some symmetric spaces

open access: yes
We study asymptotics of the eigenvalues and eigenfunctions of the operators used for constructing multidimensional scaling (MDS) on compact connected Riemannian manifolds, in particular on closed connected symmetric spaces.
Stepanov, Eugene, Ma, Tianyu
core  

Sharp Behavior of Dirichlet–Laplacian Eigenvalues for a Class of Singularly Perturbed Problems [PDF]

open access: yes
We deepen the study of Dirichlet eigenvalues in bounded domains where a thin tube is attached to the boundary. As its section shrinks to a point, the problem is spectrally stable and we quantitatively investigate the rate of convergence of the perturbed ...
Ognibene, Roberto, Abatangelo, Laura
core   +1 more source

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