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Discontinuous local semiflows for Kurzweil equations leading to LaSalle’s invariance principle for differential systems with impulses at variable times. (English) Zbl 1213.34019
Summary: We consider an initial value problem for a class of generalized ODEs, also known as Kurzweil equations, and we prove the existence of a local semidynamical system there. Under certain perturbation conditions, we also show that this class of generalized ODEs admits a discontinuous semiflow which we shall refer to as an impulsive semidynamical system. As a consequence, we obtain LaSalle’s invariance principle for such a class of generalized ODEs. Due to the importance of LaSalle’s invariance principle in studying stability of differential systems, we include an application to autonomous ordinary differential systems with impulse action at variable times.

##### MSC:
 34A37 Ordinary differential equations with impulses 34K45 Functional-differential equations with impulses 37B25 Stability of topological dynamical systems
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##### References:
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