Oscillation theorems for third order nonlinear differential equations
In this paper, sufficient conditions have been obtained for oscillation of solutions of a class of th order linear neutral delay-differential equations. Some of these results have been used to study oscillatory behaviour of solutions of a class of boundary value problems for neutral hyperbolic partial differential equations.
In this paper we compare the asymptotic behaviour of the advanced functional equation with the asymptotic behaviour of the set of ordinary functional equations On the basis of this comparison principle the sufficient conditions for property (B) of equation (*) are deduced.