Nonautonomous dynamics: classification, invariants, and implementation

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Abstract

The work is a brief review of the results obtained in nonautonomous dynamics based on the concept of uniform equivalence of nonautonomous systems. This approach to the study of nonautonomous systems was proposed in [10] and further developed in the works of the second author, and recently - jointly by both authors. Such an approach seems to be fruitful and promising, since it allows one to develop a nonautonomous analogue of the theory of dynamical systems for the indicated classes of systems and give a classi cation of some natural classes of nonautonomous systems using combinatorial type invariants. We show this for classes of nonautonomous gradient-like vector elds on closed manifolds of dimensions one, two, and three. In the latter case, a new equivalence invariant appears, the wild embedding type for stable and unstable manifolds [14,17], as shown in a recent paper by the authors [5].

About the authors

V. Z. Grines

National Research University “Higher School of Economics”

Author for correspondence.
Email: vgrines@yandex.ru
Nizhniy Novgorod, Russia

L. M. Lerman

National Research University “Higher School of Economics”

Email: lermanl@mm.unn.ru
Nizhniy Novgorod, Russia

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Copyright (c) 2022 Grines V.Z., Lerman L.M.

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