Results 61 to 70 of about 11,653 (147)

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

Asymptotic distribution of eigenvalues and eigenfunctions for a multi-point discontinuous Sturm-Liouville problem

open access: yesElectronic Journal of Differential Equations, 2016
Summary: We study a class of generalized BVP's consisting of discontinuous Sturm-Liouville equation on finite number disjoint intervals, with usual boundary conditions and supplementary transmission conditions at finite number interior points. The asymptotic behaviors of the eigenvalues and eigenfunctions are discussed.
Aydemir, Kadriye, Mukhtarov, Oktay S. H.
openaire   +4 more sources

Asymptotic formulas of eigenvalues and eigenfunctions of non-autonomous semilinear Sturm-Liouville problems

open access: yesMathematische Zeitschrift, 1995
The superlinear \((p> 1)\) non-autonomous Sturm-Liouville problem \(- u''+ k(x) u^p= \lambda u\) in \((0, 1)\), \(u(0)= u(1)= 0\) is studied from the standpoint of \(L^2\)-theory. For the solution \((\lambda, u_\lambda)\) \((\lambda> \pi^2, u_\lambda> 0)\), the bifurcation diagram in \(L^2\times \mathbb{R}\) is investigated.
openaire   +2 more sources

ON THE ASYMPTOTIC BEHAVIOR OF EIGENVALUES AND EIGENFUNCTIONS OF THE ROBIN PROBLEM WITH LARGE PARAMETER

open access: yesMathematical Modelling and Analysis, 2017
We consider the eigenvalue problem with Robin boundary condition ∆u + λu = 0 in Ω, ∂u/∂ν + αu = 0 on ∂Ω, where Ω ⊂ Rn , n ≥ 2 is a bounded domain with a smooth boundary, ν is the outward unit normal, α is a real parameter. We obtain two terms of the asymptotic expansion of simple eigenvalues of this problem for α → +∞.
openaire   +4 more sources

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

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

Asymptotic formulas for eigenvalues and eigenfunctions of a new boundary-value-transmission problem

open access: yes, 2013
In this paper we are concerned with a new class of BVP' s consisting of eigendependent boundary conditions and two supplementary transmission conditions at one interior point. By modifying some techniques of classical Sturm-Liouville theory and suggesting own approaches we find asymptotic formulas for the eigenvalues and eigenfunction.
Mukhtarov, O. Sh., Aydemir, K.
openaire   +2 more sources

Asymptotic Estimation of the Eigenvalues and Eigenfunctions for the Sixth Order Boundary Value Problems

open access: yesJournal of Zankoy Sulaimani - Part A, 2018
This paper addresses an eigenvalue problem generated by sixth order differential equations with suitable boundary conditions, which contain a spectral parameter. The asymptotic expressions for sixth order linearly independent solutions as well as new asymptotic formulas for the eigenvalues with eigenfunctions of the boundary value problem are obtained.
Karwan Jwamer, Khelan Qadr
openaire   +1 more source

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