TY - JOUR ID - Attia2022 LB - Attia2022 AU - Attia, Emad R. AU - El-Matary, Bassant M. AU - Chatzarakis, George E. TI - New oscillation conditions for first-order linear retarded difference equations with non-monotone arguments ST - New oscillation conditions for first-order linear retarded difference equations with non-monotone arguments JO - Opuscula Math. JA - Opuscula Math. JF - Opuscula Mathematica PY - 2022 VL - 42 IS - 6 SP - 769 EP - 791 DO - https://doi.org/10.7494/OpMath.2022.42.6.769 UR - https://doi.org/10.7494/OpMath.2022.42.6.769 AB - In this paper, we study the oscillatory behavior of the solutions of a first-order difference equation with non-monotone retarded argument and nonnegative coefficients, based on an iterative procedure. We establish some oscillation criteria, involving \(\lim \sup\), which achieve a marked improvement on several known conditions in the literature. Two examples, numerically solved in MAPLE software, are also given to illustrate the applicability and strength of the obtained conditions. KW - oscillation KW - difference equations KW - non-monotone argument SN - 1232-9274 ER -