On oscillation of solutions of linear deviating differential equation
On oscillation of solutions of linear ordinary differential equations
On oscillation of solutions of nonlinear retarded differential equation of Emden-Fowler type
On oscillations of solutions and their derivatives in a nonlinear third-order differential equation
On oscillatory linear differential equations of third order
Sufficient conditions are obtained in terms of coefficient functions such that a linear homogeneous third order differential equation is strongly oscillatory.
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 second order systems of ordinary differential equations.
On oscillatory properties of solutions of a certain nonlinear third order differential equation
On oscillatory properties of solutions of functional differential equations.
On oscillatory solution of the differential equations of the -th order
On oscillatory solutions of differential inequalities
On oscillatory solutions of fourth order ordinary differential equations
The paper deals with the oscillation of a differential equation as well as with the structure of its fundamental system of solutions.
On oscillatory solutions of nonlinear differential equations of the -th order vanishing at infinity
On oscillatory solutions of second order differential systems
On oscillatory solutions of the system of differential equations with deviating arguments
On oscillatory solutions of third order differential equation with quasiderivatives.
On oscillatory solutions of third-order linear differential equations
On peaks in carrying simplices
A necessary and sufficient condition is given for the carrying simplex of a dissipative totally competitive system of three ordinary differential equations to have a peak singularity at an axial equilibrium. For systems of Lotka-Volterra type that result translates into a simple condition on the coefficients.
On periodic oscillations for a class of feedback control systems in Hilbert spaces
In this paper, by using the topological degree theory for multivalued maps and the method of guiding functions in Hilbert spaces we deal with the existence of periodic oscillations for a class of feedback control systems in Hilbert spaces.