On the oscillation of solutions of first-order delay differential inequalities and equations

Abstract

Abstract. Oscillation criteria generalizing a series of earlier results are established for first order linear delay differential inequalities and equations.

Oscillation criteria for delay equations

“…In 1994 Koplatadze and Kvinikadze [14] improved (C 6 ), while in 1996 Philos and Sficas [24] and Jaroš and Stavroulakis [11] derived the conditions…”

Optimal oscillation criteria for first order difference equations with delay argument

“…For the differential equation (1-1) the problem of oscillation is investigated by many authors. See, for example, [Elbert and Stavroulakis 1995;Koplatadze and Chanturiya 1982;Koplatadze and Kvinikadze 1994;Ladas et al 1984;Sficas and Stavroulakis 2003] and the references cited therein.…”

Oscillation Criteria for First-Order Delay Equations

“…In 1994 Koplatadze and Kvinikadze [15] improved (C 6 ), while in 1998 Philos and Sficas [25], in 1999 Jaroš and Stavroulakis [11] and in 2000 Kon, Sficas and Stavroulakis [12] derived the conditions…”