Results 61 to 70 of about 350 (161)

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

Stability of the basis property of eigenvalue systems of Sturm-Liouville operators with integral boundary condition

open access: yesElectronic Journal of Differential Equations, 2016
We study a question on stability and instability of the basis property of a system of eigenfunctions of the Sturm - Liouville operator, with an integral perturbation of anti-periodic type on the boundary conditions.
Nurlan S. Imanbaev
doaj  

The Wave Model of the Sturm–Liouville Operator on an Interval [PDF]

open access: yesJournal of Mathematical Sciences, 2019
In the paper we construct the wave functional model of a symmetric restriction of the regular Sturm-Liouville operator on an interval. The model is based upon the notion of the wave spectrum and is constructed according to an abstract scheme which was proposed earlier.
openaire   +3 more sources

An inverse spectral problem for Sturm-Liouvile operator with integral delay

open access: yesElectronic Journal of Differential Equations, 2017
In this article, we study an inverse spectral problem for Sturm-Liouville operator with integral delay. We prove that the standard spectral asymptotic conditions are necessary and sufficient for unique solvability of the inverse problem.
Manaf Dzh. Manafov
doaj  

Applications of the theory of generalized Fourier transforms to Tikhonov problems

open access: yesJournal of Numerical Analysis and Approximation Theory
We define and study multiplier operators associated with the Sturm-Liouville operator involving a nonnegative function satisfying certain conditions.
Fethi Soltani, Akram Nemri
doaj   +1 more source

New Type of Sturm-Liouville Problems in Associated Hilbert Spaces

open access: yesJournal of Function Spaces, 2014
We introduce a new type of discontinuous Sturm-Liouville problems, involving an abstract linear operator in equation. By suggesting own approaches we define some new Hilbert spaces to establish such properties as isomorphism, coerciveness, and maximal ...
O. Sh. Mukhtarov, K. Aydemir
doaj   +1 more source

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