Results 81 to 90 of about 6,031,844 (195)

Impedance Variation in a Coaxial Coil Encircling a Metal Tube Adapter. [PDF]

Sensors (Basel), 2023
Luo Y, Yang X.
europepmc   +1 more source

Constants in the oscillation theory of higher order Sturm-Liouville differential equations

Electronic Journal of Differential Equations, 2002
We find the the exact value of a constant in some oscillation criteria for the higher order Sturm-Liouville differential equation $$ (-1)^{n}(t^alpha y^{(n)})^{(n)}=q(t)y . $$ We also study some general aspects in the oscillation theory of this equation.
Ondrej Dosly
doaj  

Mixed boundary value problems involving Sturm–Liouville differential equations with possibly negative coefficients

Boundary Value Problems
This paper is devoted to the study of a mixed boundary value problem for a complete Sturm–Liouville equation, where the coefficients can also be negative. In particular, the existence of infinitely many distinct positive solutions to the given problem is
Gabriele Bonanno, Giuseppina D’Aguì, Valeria Morabito   +2 more
doaj   +1 more source

Computation of Eigenvalues and Eigenfunctions in the Solution of Eddy Current Problems. [PDF]

Sensors (Basel), 2023
Theodoulidis T, Skarlatos A, Tytko G.
europepmc   +1 more source

Asymptotic Behaviour of Eigenvalues and Eigenfunctions of a Sturm-Liouville Problem with Retarded Argument

Journal of Applied Mathematics, 2013
In the present paper, a discontinuous boundary-value problem with retarded argument at the two points of discontinuities is investigated. We obtained asymptotic formulas for the eigenvalues and eigenfunctions.
Erdoğan Şen, Jong Jin Seo, Serkan Araci   +2 more
doaj   +1 more source

Exact and Numerical Solution of the Fractional Sturm-Liouville Problem with Neumann Boundary Conditions. [PDF]

Entropy (Basel), 2022
Klimek M, Ciesielski M, Blaszczyk T.
europepmc   +1 more source

On Positive Definite Kernels of Integral Operators Corresponding to the Boundary Value Problems for Fractional Differential Equations. [PDF]

Entropy (Basel), 2022
Aleroev M, Aleroev T.
europepmc   +1 more source

The UV prolate spectrum matches the zeros of zeta. [PDF]

Proc Natl Acad Sci U S A, 2022
Connes A, Moscovici H.
europepmc   +1 more source

On a complete parametric Sturm-Liouville problem with sign changing coefficients

AIMS Mathematics
In this paper we study a complete second order differential equation of Sturm-Liouville type under Dirichlet boundary condition and where the variable coefficients are allowed to be sign changing. Through critical point theory, we obtain the existence of
Eleonora Amoroso, Giuseppina D'Aguì, Valeria Morabito   +2 more
doaj   +1 more source

Orthonormal Bernstein Galerkin technique for computations of higher order eigenvalue problems. [PDF]

MethodsX, 2023
Farzana H, Bhowmik SK, Bhowmik SK, Islam MS.   +3 more
europepmc   +1 more source