## Positive periodic solutions of nonlinear differential systems with impulses.(English)Zbl 1162.34064

Differential systems with impulses and delays are considered. Sufficiently conditions for the existence of periodic solutions of such systems are derived.

### MSC:

 34K45 Functional-differential equations with impulses 34K13 Periodic solutions to functional-differential equations 47N20 Applications of operator theory to differential and integral equations
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### References:

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