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Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, 2025, Volume 65, Pages 72–84
DOI: https://doi.org/10.35634/2226-3594-2025-65-05
(Mi iimi478)
 

MATHEMATICS

The connection of the complete properties of wandering, oscillation and rotation of a differential system with the measures of these properties

I. N. Sergeev

Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia
References:
Abstract: The oscillatory properties of solutions of an arbitrary nonlinear differential system (with a zero solution) are considered. For such a system, the lower, upper, lowest, and upperest indices of oscillation, wandering, and rotation are determined. The connections of the numerical values of those indices with both the corresponding complete and completest oscillatory properties of that system and with the properties opposite to them: non-oscillation, non-wandering, and non-rotation are studied. The logical connections of all the listed properties with each other are also studied, and the absence of individual such connections is confirmed by concrete counterexamples. In addition, a similar connection is studied between the presence of any oscillatory property in a system and the unit or zero value of the measure of the corresponding property for the system itself (the concepts of such measures of a probabilistic nature for a differential system have only recently been introduced into consideration).
Keywords: differential system, oscillation, wandering, rotation, oscillation index, complete oscillation, completest oscillation, measure of oscillation
Funding agency Grant number
Ministry of Science and Higher Education of the Russian Federation 075-03-2024-074/5
The study was funded by the Ministry of Science and Higher Education of the Russian Federation, project no. 075-03-2024-074/5.
Received: 27.01.2025
Accepted: 03.03.2025
Bibliographic databases:
Document Type: Article
UDC: 517.925.56
MSC: 34C10
Language: Russian
Citation: I. N. Sergeev, “The connection of the complete properties of wandering, oscillation and rotation of a differential system with the measures of these properties”, Izv. IMI UdGU, 65 (2025), 72–84
Citation in format AMSBIB
\Bibitem{Ser25}
\by I.~N.~Sergeev
\paper The connection of the complete properties of wandering, oscillation and rotation of a differential system with the measures of these properties
\jour Izv. IMI UdGU
\yr 2025
\vol 65
\pages 72--84
\mathnet{http://mi.mathnet.ru/iimi478}
\crossref{https://doi.org/10.35634/2226-3594-2025-65-05}
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