作者研究了一类多偏差变元中立型Rayleigh方程 (x(t))-cx(t-r))″+∑^m i=1ai(t)f(x′(t-μi(t)))+∑^n j=i βi(t)g(x(t-Tj(t)))=p()t周期解问题,利用Mawhin重合度拓展定理得到了周期解存在性的新结果.
In this paper, by employing Mawhin's continuation theorem, the authors study a kind of neutral Rayleigh functional differential equation with multiple deviating arguments. A new result on the existence of its periodic solutions is obtained.