Results 11 to 20 of about 1,275,970 (163)

Bounds of Eigenvalues for Complex q-Sturm–Liouville Problem

open access: yesMathematics
The eigenvalues of complex q-Sturm–Liouville boundary value problems are the focus of this paper. The coefficients of the corresponding q-Sturm–Liouville equation provide the lower bounds on the real parts of all eigenvalues, and the real part of the ...
Xiaoxue Han
doaj   +2 more sources

Wave equation for Sturm-Liouville operator with singular intermediate coefficient and potential [PDF]

open access: yes, 2023
In this paper, we consider a wave equation on a bounded domain with a Sturm–Liouville operator with a singular intermediate coefficient and a singular potential. To obtain and evaluate the solution, the method of separation of variables is used, then the
Ruzhansky, M, YESKERMESSULY, A
core   +11 more sources

Indefinite Hamiltonian systems whose Titchmarsh–Weyl coefficients have no finite generalized poles of non-positive type [PDF]

open access: yes, 2013
The two-dimensional Hamiltonian system (*)  y'(x)=zJH(x)y(x),  x∈(a,b), where the Hamiltonian H takes non-negative 2x2-matrices as values, and $J:= \begin{pmatrix} 0 & -1 \\ 1 & 0 \end{pmatrix}$, has attracted a lot of interest over the past decades ...
Harald Woracek   +3 more
core   +4 more sources

Eigenvalue enclosures and exclosures for non-self-adjoint problems in hydrodynamics [PDF]

open access: yes, 2010
In this paper we present computer-assisted proofs of a number of results in theoretical fluid dynamics and in quantum mechanics. An algorithm based on interval arithmetic yields provably correct eigenvalue enclosures and exclosures for non-self-adjoint ...
Langer, M.   +4 more
core   +4 more sources

Wave equation for Sturm-Liouville operator with singular potentials [PDF]

open access: yes, 2022
The paper is denoted to the initial-boundary value problem for the wave equation with the Sturm-Liouville operator with irregular (distributive) potentials.
Yeskermessuly, Alibek   +2 more
core   +1 more source

Spectral Analysis of Non-selfadjoint Second Order Difference Equation with Operator Coefficient

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2020
In this paper, we consider the discrete Sturm-Liouville operator generated by second order difference equation with non-selfadjoint operator coefficient.
Esra Kır Arpat, Gökhan Mutlu
doaj   +1 more source

The Uniqueness Theorem for the Solutions of Dual Equations of Sturm-Liouville Problems with Singular Points and Turning Points [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
In this paper, linear second-order differential equations of Sturm-Liouville type having a finite number of singularities and turning points in a finite interval are investigated.
Seyfollah Mosazadeh
doaj   +1 more source

On a fractional hybrid version of the Sturm–Liouville equation

open access: yesAdvances in Difference Equations, 2020
It is well known that the Sturm–Liouville equation has many applications in different areas of science. Thus, it is important to review different versions of the well-known equation.
Zohreh Zeinalabedini Charandabi   +2 more
doaj   +1 more source

On strong singular fractional version of the Sturm–Liouville equation

open access: yesBoundary Value Problems, 2021
The Sturm–Liouville equation is among the significant differential equations having many applications, and a lot of researchers have studied it. Up to now, different versions of this equation have been reviewed, but one of its most attractive versions is
Mehdi Shabibi   +3 more
doaj   +1 more source

Continuations of Hermitian indefinite functions and corresponding canonical systems : an example [PDF]

open access: yes, 2004
M. G. Krein established a close connection between the continuation problem of positive definite functions from a finite interval to the real axis and the inverse spectral problem for differential operators.
Langer, M.   +5 more
core   +3 more sources

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