Email this article ON DISCRETENESS OF SPECTRUM OF A SECOND ORDER FUNCTIONAL DIFFERENTIAL OPERATOR
- Authors: Labovskiy S.M.1
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Affiliations:
- Plekhanov Russian University of Economics
- Issue: Vol 23, No 121 (2018)
- Pages: 5-9
- Section: Articles
- URL: https://journal-vniispk.ru/2686-9667/article/view/297205
- DOI: https://doi.org/10.20310/1810-0198-2018-23-121-5-7
- ID: 297205
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Abstract
Necessary and sufficient conditions for discreteness of spectrum for the singular second order functional differential operator of the form 1 ρ x - p x u' ' +q x u - a b u s r x , ds , x∈ a , b , - ∞≤ a
Full Text
Let L be the functional differential operator defined by×
About the authors
Sergey Mikhailovich Labovskiy
Plekhanov Russian University of Economics
Email: labovski@gmail.com
Candidate of Physics and Mathematics, Associate Professor of the Higher Mathematics Department 36 Stremyanny lane, Moscow 117997, Russian Federation
References
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