Invariant Curves of Almost Periodic Reversible Mappings.

In this paper, we prove some invariant curve theorems for the planar almost periodic reversible mappings. As an application, we will discuss the existence of almost periodic solutions and the boundedness of all solutions for the nonlinear oscillator $x"+g(x)x'+\varpi^{2}x+\varphi(x)=f(t)$ with $f(t)$ almost periodic.