本文应用 Mawhin 重合度拓展定理研究了一类具偏差变元的广义平均曲率方程( x′(t)1+(x′(t))2)′+f(x′(t))+g(x(t-τ(t)))=p(t)周期解的存在性问题,得到了与周期解存在性相关的一些结果。
In this paper,the authors study the existence of periodic solutions for prescribed mean curva-ture equation with a deviating argument ( x′(t)1+(x′(t))2 )′+f(x′(t))+g(x(t-τ(t)))=p(t).By using coincidence degree theory and some analysis methods,some existence results are presented.