On the spectrum of singular q-Sturm-Liouville operators on the whole axis

We give some conditions for the self-adjoint operators associated with the q-Sturm-Liouville expression ?y := ? 1/q Dq ?1 (p(x)Dqy(x)) + r(x), ? ? < x < ?. to have a discrete spectrum, and investigate the continuous spectra of these operators. We also prove that the regular symmetric q-Sturm-Liouville operator is semi-bounded from below which is not studied in literature yet.

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Publication Details

Journal
Publications de l Institut Mathematique
Published
2025-01-01
DOI
https://doi.org/10.2298/pim2531105a
Primary Topic
Spectral Theory in Mathematical Physics
Type
article
Field-Weighted Citation Impact
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article

On the spectrum of singular q-Sturm-Liouville operators on the whole axis

Hüseyin Tuna, Bilender P. Allahverdiev
Publications de l Institut Mathematique
Spectral Theory in Mathematical Physics
article

On the spectrum of singular q-Sturm-Liouville operators on the whole axis

Hüseyin Tuna, Bilender P. Allahverdiev
article en

Abstract

We give some conditions for the self-adjoint operators associated with the q-Sturm-Liouville expression ?y := ? 1/q Dq ?1 (p(x)Dqy(x)) + r(x), ? ? < x < ?. to have a discrete spectrum, and investigate the continuous spectra of these operators. We also prove that the regular symmetric q-Sturm-Liouville operator is semi-bounded from below which is not studied in literature yet.

Publications de l Institut MathematiqueVol. 117(131)
Khazar University (AZ), Azerbaijan State University of Economics (AZ), Burdur Mehmet Akif Ersoy Üniversitesi (TR)
Openalex Percentile: Top 84%
Spectral Theory in Mathematical Physics
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