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JOURNALS // Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta // Archive

Izv. IMI UdGU, 2015 Issue 2(46), Pages 171–183 (Mi iimi318)

This article is cited in 11 papers

The complete set of relations between the oscillation, rotation and wandering indicators of solutions of differential systems

I. N. Sergeev

Faculty of Mathematics and Mechanics, Lomonosov Moscow State University, Leninskie Gory, 1, Moscow, 119991, Russia

Abstract: In this paper a number of Lyapunov indicators is defined for non-trivial solutions of linear systems on semiaxis to be responsible for their oscillation, rotation and wandering. The indicators are obtained from some functionals of solutions on finite intervals as a result of averaging over time and minimizing for all bases in the phase space. We give a set of relations (equalities or inequalities) between introduced indicators. The set is proved to be full, that is, it cannot be supplemented or strengthened by any meaningful relation.

Keywords: differential equations, linear system, oscillation, rotation, wandering, indicators of solutions, Lyapunov exponents.

UDC: 517.926

MSC: 34D08

Received: 08.10.2015



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