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| Author(s) | Șubă, Alexandru |
|---|
Analytical two-dimensional system of differential equations with a weak focus are considered. It is shown how by using a given sequence of humogenous polynomials of even degree one can construct a function with the rate of change along trajectories of system to be a linear combination of them polynomials. The coefficiente of this linear combination are the Lyapunov quantities.
| Author(s) | Șubă, Alexandru |
|---|
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