Comparison theorems for functional differential equations
In this paper the oscillatory and asymptotic properties of the solutions of the functional differential equation are compared with those of the functional differential equation .
Oscillation theorems for neutral differential equations of higher order
In this paper we present some new oscillatory criteria for the -th order neutral differential equations of the form The results obtained extend and improve a number of existing criteria.
Comparison theorem for third-order differential equations
Asymptotic properties of differential equations with deviating argument
Asymptotic properties of third order delay differential equations
Oscillation and asymptotic properties of -th order differential equations
Comparison theorems for differential equations with deviating argument
Asymptotic properties of third-order differential equations with deviating argument
On unstable neutral differential equations of the second order
The aim of this paper is to present sufficient conditions for all bounded solutions of the second order neutral differential equation to be oscillatory and to improve some existing results. The main results are based on the comparison principles.
The oscillation of a differential equation of second order with deviating argument
Asymptotic analysis of -th order differential equations
Property (A) of advanced functional-differential equations
Comparison theorems for nonlinear ODE's
Unbounded oscillation of the second-order neutral differential equations
Oscillation of second order differential equations with advanced argument
Property of third order differential equations with deviating argument
Oscillation criteria for second order nonlinear retarded differential equations
Property (B) of differential equations with deviating argument
The aim of this paper is to deduce oscillatory and asymptotic behavior of delay differential equation from the oscillation of a set of the first order delay equations.
Oscillation of a second order delay differential equations
In this paper, we study the oscillatory behavior of the solutions of the delay differential equation of the form The obtained results are applied to n-th order delay differential equation with quasi-derivatives of the form
Oscillatory and asymptotic behaviour of solutions of advanced functional 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.
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