Labovskiy Sergey M.: On discreteness of spectrum of a second order differential operator. (2020)
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Abstract
A new form of a necessary and sufficient conditions for the discreteness of the spectrum of singular operator − 1 ρ(x) (p(x)u 0 0 , −∞ ≤ a ≤ x ≤ b ≤ +∞ is obtained. A simpler proof of the necessity is obtained.
| Item Type: | Journal |
|---|---|
| Publication full: | Electronic journal of qualitative theory of differential equations |
| Date: | 2020 |
| Number: | 52 |
| ISSN: | 1417-3875 |
| DOI: | 10.14232/ejqtde.20XX.1.XX |
| Uncontrolled Keywords: | Differenciálegyenlet |
| Additional Information: | Bibliogr.: 9. p. ; összefoglalás angol nyelven |
| Date Deposited: | 2020. Nov. 30. 13:26 |
| Last Modified: | 2021. Oct. 20. 13:52 |
| URI: | http://acta.bibl.u-szeged.hu/id/eprint/70936 |
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