Abstract

Linear delay difference equations as well as generalized characteristic equations and their importance at oscillation of all solutions of considered difference equations are studied in this paper. Some results of comparison of solutions of difference equations and inequalities as well as conditions for the existence of positive solutions are presented as the application of the generalized characteristic equation.

Keywords: Delay difference equation, generalized characteristic equation, oscillation of soultions.

MSC: 39A10

Pages:  31$-$36     

Volume  50 ,  Issue  1$-$2 ,  1998