Results 71 to 80 of about 15,725 (152)

Inverse Sturm-Liouville problems with fixed boundary conditions

open access: yesElectronic Journal of Differential Equations, 2015
Necessary and sufficient conditions for two sequences $\{\mu_n\}_{n=0}^\infty$ and $\{ a_n\}_{n=0}^\infty$ to be the spectral data for a certain Sturm-Liouville problem are well known.
Yuri A. Ashrafyan, Tigran N. Harutyunyan
doaj  

Numerical study of the Sturm–Liouville problem [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
The article discusses the general Sturm–Liouville problem. To solve it numerically, a new algorithm is proposed, which is based on the varia-tional principle and does not use saturation.
S.D. Algazin, A.A. Sinitsyn
doaj   +1 more source

Approximate solution for Euler equations of stratified water via numerical solution of coupled KdV system

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
We consider Euler equations with stratified background state that is valid for internal water waves. The solution of the initial-boundary problem for Boussinesq approximation in the waveguide mode is presented in terms of the stream function.
A. A. Halim   +2 more
doaj   +1 more source

Linear second-order problems with Sturm-Liouville-type multi-point boundary conditions

open access: yesElectronic Journal of Differential Equations, 2012
We consider the eigenvalue problem for the equation $-u'' = lambda u$ on $(-1,1)$, together with general Sturm-Liouville-type, multi-point boundary conditions at $pm 1$. We show that the basic spectral properties of this problem are similar to those
Bryan P. Rynne
doaj  

On characteristic functions of equilateral regular star-trees [PDF]

open access: yesМатематичні Студії, 2012
A spectral problem generated by the Sturm-Liouville equation on the edges of a regular equilateral finite star-tree with the Dirichlet boundary conditions at the pendant vertices and continuity and Kirchhoff's conditions at the interior vertices is ...
N. A. Rozhenko
doaj  

Inverse Problems for the Quadratic Pencil of the Sturm-Liouville Equations with Impulse

open access: yesAbstract and Applied Analysis, 2013
In this study some inverse problems for a boundary value problem generated with a quadratic pencil of Sturm-Liouville equations with impulse on a finite interval are considered.
Rauf Kh. Amırov, A. Adiloglu Nabıev
doaj   +1 more source

Unstable even-parity eigenmodes of the regular static SU(2) Yang-Mills-dilaton solutions

open access: yes, 2004
In this paper we obtain unstable even-parity eigenmodes to the static regular spherically symmetric solutions of the SU(2) Yang-Mills-dilaton coupled system of equations in 3+1 Minkowski space-time.
Boyadjiev, T. L.   +4 more
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