On oscillation of solutions of second-order systems of deviated differential equations.
On oscillatory fourth order nonlinear neutral differential equations. II.
On oscillatory fourth order nonlinear neutral differential equations. I.
On oscillatory properties of an -th order system of differential equations with deviating arguments.
On oscillatory properties of an -th-order system of linear differential equations with deviating arguments.
On oscillatory properties of solutions of functional differential equations.
On oscillatory solutions of the system of differential equations with deviating arguments
On partial stability for delay systems
On periodic linear neutral delay differential and difference equations.
On periodic solutions of first order nonlinear differential equations with deviating arguments.
On periodic solutions of higher-order functional differential equations.
On periodic solutions of second order functional differential equations.
On periodic solutions of systems of linear functional-differential equations
This paper deals with the system of functional-differential equations where is a linear bounded operator, , and and are spaces of -dimensional -periodic vector functions with continuous and integrable on components, respectively. Conditions which guarantee the existence of a unique -periodic solution and continuous dependence of that solution on the right hand side of the system considered are established.
On periodic solutions to nonlinear functional-differential equations.
On periodic solutions to systems of linear functional-differential equations.
On perturbations of deviations of periodic differential-difference equations in Banach spaces
On positive solutions of functional-differential equations in Banach spaces.
On positive solutions of nonlinear retarded differential equations
On proper oscillatory and vanishing-at-infinity solutions of differential equations with a deviating argument.
On property (B) of higher order delay differential equations
In this paper we offer criteria for property (B) and additional asymptotic behavior of solutions of the -th order delay differential equations Obtained results essentially use new comparison theorems, that permit to reduce the problem of the oscillation of the n-th order equation to the the oscillation of a set of certain the first order equations. So that established comparison principles essentially simplify the examination of studied equations. Both cases and are discussed.