Raffoul, Youssef N.2020-08-112020-08-112002-06-13Raffoul, Y. N. (2002). Positive periodic solutions of nonlinear functional difference equations. <i>Electronic Journal of Differential Equations, 2002</i>(55), pp. 1-8.1072-6691https://hdl.handle.net/10877/12357In this paper, we apply a cone theoretic fixed point theorem to obtain sufficient conditions for the existence of multiple positive periodic solutions to the nonlinear functional difference equations x(n + 1) = α(n)x(n) ± λh(n)ƒ(x(n - τ(n))).Text8 pages1 file (.pdf)enAttribution 4.0 InternationalCone theoryPositivePeriodicFunctional difference equationsArticle