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arXiv · 1801.10336

Nonautonomous gradient-like ODEs on the circle: classification, structural stability and autonomization

L. M. Lerman·E. V. Gubina
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Abstract

We study a class of scalar differential equations on the circle $S^1$. This class is characterized mainly by the property that any solution of such an equation possesses exponential dichotomy both on the semi-axes $\R_+$ and $\R_+$. Also we impose some other assumptions on the structure of the foliation into integral curves for such the equation. Differential equations of this class are called gradient-like ones. As a result, we describe the global behavior of the foliation, introduce a complete invariant of uniform equivalency, give standard models for the equations of the distinguished class. The case of almost periodic gradient-like equations is also studied, their classification is presented.

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L. M. Lerman, E. V. Gubina. 2018-01-31. Nonautonomous gradient-like ODEs on the circle: classification, structural stability and autonomization. https://arxiv.org/abs/1801.10336

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