Oscillation in neutral delay difference equations with variable coefficients (Q1346839)

The paper deals with the neutral delay difference equation \[ \Delta (y_ n - p_ n y_{n-k}) + q_ n y_{n-l} = 0, \quad n = 0,1,2, \dots, \] where \(p_ n, q_ n\) \((n=0,1,2, \dots)\) are real numbers with \(p_ n \geq 0\), \(q_ n \geq 0\), \(k\) and \(l\) are nonnegative integers. Some sufficient conditions are established for oscillation of all solutions of the above equation.