Abstract. A comparison result is presented for linear impulsive delay differential equations (IDDE), and a new monotone iterative technique is obtained for nonlinear IDDE, which improve the results [3,4] in the literature.

AMS Subject Classification (1991): 34K15, 34K25, 34C10

Keyword(s): Impulsive delay differential equation, monotone iterative technique, comparison theorem

Received October 13, 1997 and in revised form January 13, 1999. (Registered under 2676/2009.)