Periodic solutions of neutral differential models with state-dependent delay and feedback control

摘要

In this paper, the author employs and develops the continuation theory and degree theory for k-set contractions to investigate the existence of positive periodic solutions of a general neutral functional system with feedback control state-dependent and distributed delays. The results give new methods for studying neutral systems, which extend and improve existing results, and have further applications in many fields such as population dynamics. Copyright (c) 2007 John Wiley & Sons, Ltd.