Lyapunov Function Stability is a method used in control theory and dynamical systems to assess the stability of equilibrium points. A Lyapunov function is a scalar function that is continuous, positive definite, and decreases over time along the trajectories of the system. Specifically, it satisfies the conditions:
If such a function can be found, it implies that the equilibrium point is stable. The significance of Lyapunov functions lies in their ability to provide a systematic way to demonstrate stability without needing to solve the system's differential equations explicitly. This approach is particularly useful in nonlinear systems where traditional methods may fall short.
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