Abstract:
We present a topological–analytical method for proving some results of the N. N. Bogolyubov averaging method for the case of an infinite time interval. The essence of the method is to combine topological methods of proving the existence of a periodic solution applied to the averaged system with Bogolyubov's theorem on the averaging on a finite time interval. The proposed approach allows us to dispense with the nondegeneracy condition for the Jacobi matrix from the classical theorems of the averaging method.
Keywords:averaging, averaging on an infinite interval, degenerate case, asymptotic stability, elliptic fixed point, center.
The work was supported by the Russian Science Foundation under grant no. 21-71-30011, https://rscf.ru/en/project/21-71-30011/, and performed at the P. G. Demidov Yaroslavl State University.
Citation:
Ivan Yu. Polekhin, “A Topological–Analytical Method for Proving Averaging Theorems on an Infinite Time Interval in a Degenerate Case”, Modern Methods of Mechanics, Collected papers. On the occasion of the 90th birthday of Academician Andrei Gennad'evich Kulikovskii, Trudy Mat. Inst. Steklova, 322, Steklov Math. Inst., Moscow, 2023, 195–205; Proc. Steklov Inst. Math., 322 (2023), 188–197
\Bibitem{Pol23}
\by Ivan~Yu.~Polekhin
\paper A Topological--Analytical Method for Proving Averaging Theorems on an Infinite Time Interval in a Degenerate Case
\inbook Modern Methods of Mechanics
\bookinfo Collected papers. On the occasion of the 90th birthday of Academician Andrei Gennad'evich Kulikovskii
\serial Trudy Mat. Inst. Steklova
\yr 2023
\vol 322
\pages 195--205
\publ Steklov Math. Inst.
\publaddr Moscow
\mathnet{http://mi.mathnet.ru/tm4345}
\crossref{https://doi.org/10.4213/tm4345}
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\jour Proc. Steklov Inst. Math.
\yr 2023
\vol 322
\pages 188--197
\crossref{https://doi.org/10.1134/S0081543823040168}
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