تناوب در دستگاه معادلات دیفرانسیل با تاخیر متناهی

The existence and uniqueness of a periodic solution of the system of differential equations d dt x(t) = A(t)x(t − ) are proved. In particular the Krasnoselskii’s fixed point theorem and the contraction mapping principle are used in the analysis. In addition, the notion of fundamental matrix solution coupled with Floquet theory is also employed.  

Keywords:

Fixed point , Fundamental matrix solution , Floquet theory , periodic solution