Results 81 to 90 of about 13,845 (157)

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

open access: yesBoundary 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   +2 more
doaj   +1 more source

Principal solution in Weyl-Titchmarsh theory for second order Sturm-Liouville equation on time scales

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2017
A connection between the oscillation theory and the Weyl-Titchmarsh theory for the second order Sturm-Liouville equation on time scales is established by using the principal solution.
Petr Zemanek
doaj   +1 more source

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

open access: yesProc Natl Acad Sci U S A, 2022
Connes A, Moscovici H.
europepmc   +1 more source

Inverse scattering problems for energy-dependent Sturm-Liouville equations with point delta-interaction and eigenparameter-dependent boundary condition

open access: yesElectronic Journal of Differential Equations, 2013
We consider an inverse problem of the scattering theory for energy-dependent Sturm-Liouville equations on the half line $[0,+\infty )$ with point $\delta $-interaction and eigenparameter-dependent boundary condition.
Manaf Dzh. Manafov, Abdullah Kablan
doaj  

Spectral and Oscillation Theory for an Unconventional Fractional Sturm–Liouville Problem

open access: yesFractal and Fractional
Here, we investigate the spectral and oscillation theory for a class of fractional differential equations subject to specific boundary conditions.
Mohammad Dehghan, Angelo B. Mingarelli
doaj   +1 more source

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