... and G Ladas and P H Vlahos, Global attraction in a delay difference o equation, Nonlin Anal 17 (1991) 473–479 G Karakostas, Ch G Philos, and Y G Sficas, The dynamics of some discrete population models, ... solution Theorem If either (2.3) (2.4) On the Asymptotic Behavior of Solutions of a Nonlinear = and = ∞ and 169 =∞ (2.5) =0 (2.6) or then (2.1) has at least one positive periodic solution Now, to apply ... 164 is the oscillation of solutions of the difference equation xn+1 − xn + pn xn−m = 0, n∈N in [1]; the positive periodic solutions of nonlinear delay functional difference equations xn+1 = an xn...