摘要

In this paper, we consider the existence of periodic solutions for the Rayleigh type p-Laplacian equation with a deviating argument (phi(p)(x'(t)))' f(x'(t)) beta(t)g(x(t - tau(t))) = e(t). The interest is that the function f(x) and the coefficient beta(t) are allowed to change signs, which is different from the corresponding ones of known literature.