... method of constructing sub-supersolution, this paper givesthe existence of infinitely many periodic solutions for problem P.2. Main Results and ProofsAt first, we give an existence of positive solutions ... solution of P, and the periodic of unx,vnx is 4nT. This completes the proof.2 Journal of Inequalities and ApplicationsIn 19 , the authors consider the existence of positive weak solutions ... Zhang, X. Liu, and Z. Qiu, “The method of subsuper solutions for weighted pr-Laplacianequation boundary value problems,” Journal of Inequalities and Applications, vol. 2008, Article ID621621,...