ACTA MATHEMATICA
UNIVERSITATIS COMENIANAE



Vol. LXXX, 1 (2011)
p. 31 - 38
Positive periodic solutions of impulsive functional differential equations with a parameter

Yanqin Wang, Qingwei Tu, Qiang Wang and Chao Hu

Received: February 10, 2009;   Accepted: September 25, 2010


Abstract.   By using a fixed point theorem of strict-set-contraction, some criteria are established for the existence of positive periodic solutions of the following impulsive functional differential equations with a parameter  
strom


Keywords:  Periodic solution; impulse effect; functional differential equation; strict-set-contraction.  

AMS Subject classification: Primary:  34C25, 34K14, 34K45.  

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Acta Mathematica Universitatis Comenianae
ISSN 0862-9544   (Printed edition)

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