Oscillation of first-order delay differential equations

Abstract

This paper is concerned with the oscillation of first-order delay differential equations x′(t) + p (t)x(τ(t)) = 0, where p(t) and τ(t) are piecewise continuous and nonnegative functions and τ(t) is non-decreasing. A new oscillation criterion is obtained. © Australian Mathematical Society 2004.