本文利用Mawhin重合度理论，研究了一类高阶中立型泛函微分方程周期解的存在性，给出这一类方程至少存在一个T周期解的充分性条件。%Using Mawhin’ s coincidence degree theorem, in this paper, the existence of periodic solutions for a kind of higher order neutral functional differential equation is studied, and the sufficient condition for existence of -periodic solutions is given.
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