Existence and uniqueness of positive periodic solutions for Rayleigh type pp-Laplacian equation

In this paper, we use the coincidence degree theory to establish new results on the existence and uniqueness of positive TT-periodic solutions for the Rayleigh type pp-Laplacian equation of the form (φp(x′(t)))′+f(t,x′(t))+g(t,x(t))=e(t).(φp(x′(t)))′+f(t,x′(t))+g(t,x(t))=e(t).