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A note on norm-based Lyapunov functions via contraction analysis

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arxiv 1308.0586 v1 pith:PGEOYJ4N submitted 2013-07-30 math.DS cs.SYeess.SY

classification math.DScs.SYeess.SY
keywords alongdecreasesequilibriumevaluatedexponentiallylyapunovtrajectoryadditionally
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It is well know that for globally contractive autonomous systems, there exists a unique equilibrium and the distance to the equilibrium evaluated along any trajectory decreases exponentially with time. We show that, additionally, the magnitude of the velocity evaluated along any trajectory decreases exponentially, thus giving an alternative choice of Lyapunov function.

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